WorldWideScience

Sample records for asymptotics-based ci models

  1. CI Implementation

    DEFF Research Database (Denmark)

    Jørgensen, Frances; Boer, Harry; Laugen, Bjørge Timenes

    2006-01-01

    Continuous Improvement Network Survey and a number of empirical cases described in the literature. While the CI Maturity Model suggests that CI maturation ought to be a linear process, the findings in this article suggest that there are feasible alternatives for companies to develop CI capability.......There are a number of tools available for organizations wishing to measure and subsequently develop Continuous Improvement (CI). In this article, we review and evaluate a well-accepted CI development model, namely the CI Maturity Model (Bessant and Caffyn, 1997), against data collected from the 2nd...

  2. Development and Analysis of Original UNIFAC-CI and Modified UNIFAC-CI Models for Prediction of VLE and SLE Systems

    DEFF Research Database (Denmark)

    Mustaffa, Azizul Azri; Kontogeorgis, Georgios; Kang, Jeong Won

    the GCPlus approach to the original UNIFAC and Modified (Dortmund) UNIFAC have been regressed against vapor-liquid equilibrium (VLE) data and simultaneously against VLE and solid-liquid equilibrium (SLE) data for groups formed by C, H, O, N, Cl and S atoms. Initially the VLE data used to regress those...... obtained for each dataset indicate the quality of each datasets and can then be used as weighting factors, in the objective function for the parameter regression with VLE data (and with SLE data). The performance of the CI-models using parameters regressed against VLE data and simultaneously against VLE...... properties, the molecular interactions with the molecular structures. One established GC method is the UNIFAC model to predict liquid phase activity coefficients. The needed values of the group interaction parameters (GIPs) are obtained by fitting phase equilibrium data. There are many gaps in the UNIFAC...

  3. CI-WATER HPC Model: Cyberinfrastructure to Advance High Performance Water Resources Modeling in the Intermountain Western U.S

    Science.gov (United States)

    Ogden, F. L.; Lai, W.; Douglas, C. C.; Miller, S. N.; Zhang, Y.

    2012-12-01

    The CI-WATER project is a cooperative effort between the Utah and Wyoming EPSCoR jurisdictions, and is funded through a cooperative agreement with the U.S. National Science Foundation EPSCoR. The CI-WATER project is acquiring hardware and developing software cyberinfrastructure (CI) to enhance accessibility of High Performance Computing for water resources modeling in the Western U.S. One of the components of the project is development of a large-scale, high-resolution, physically-based, data-driven, integrated computational water resources model, which we call the CI-WATER HPC model. The objective of this model development is to enable evaluation of integrated system behavior to guide and support water system planning and management by individual users, cities, or states. The model is first being tested in the Green River basin of Wyoming, which is the largest tributary to the Colorado River. The model will ultimately be applied to simulate the entire Upper Colorado River basin for hydrological studies, watershed management, economic analysis, as well as evaluation of potential changes in environmental policy and law, population, land use, and climate. In addition to hydrologically important processes simulated in many hydrological models, the CI-WATER HPC model will emphasize anthropogenic influences such as land use change, water resources infrastructure, irrigation practices, trans-basin diversions, and urban/suburban development. The model operates on an unstructured mesh, employing adaptive mesh at grid sizes as small as 10 m as needed- particularly in high elevation snow melt regions. Data for the model are derived from remote sensing sources, atmospheric models and geophysical techniques. Monte-Carlo techniques and ensemble Kalman filtering methodologies are employed for data assimilation. The model includes application programming interface (API) standards to allow easy substitution of alternative process-level simulation routines, and provide post

  4. Ci PERMIT

    CERN Multimedia

    Relations with the Host States Service

    1999-01-01

    The Swiss Permanent Mission to the International Organisations at Geneva recalls that only the spouses and children of members of personnel resident in Switzerland and in possession of a legitimation card of types 'B', 'C', 'D' or 'E' issued by the Swiss Federal Department of Foreign Affairs are entitled to benefit from a Ci Permit.The 'demande d'attestation de permis Ci' (request for a Ci permit attestation) can be sent to the Mission only through Personnel Division (Administrative Services, Office 33/1-025).Additional information on access by family members of CERN officials to the Swiss labour market are available to you on the Web site of the Relations with the Host States Service (cf. document entitled 'Employment in Switzerland for spouses and children of CERN officials' dated March 1996).Relations with the Host States Servicehttp://www.cern.ch/relations/Tel. 72848

  5. Ukaegbe, CI

    African Journals Online (AJOL)

    Ukaegbe, CI. Vol 11, No 1-2 (2012) - Articles Postpartum Depression Among Igbo Women In An Urban Mission Hospital, South East Nigeria Abstract. ISSN: 1597-1260. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  6. Polska prasa tabletowa – modele biznesowe dystrybucji treści

    Directory of Open Access Journals (Sweden)

    Krzysztof Flasiński

    2012-02-01

    Full Text Available Autor przeanalizował aplikacje spełniające trzy warunki: przeznaczone na tablety marki iPad, dostępne w sklepie App Store oraz powiązane z polskojęzycznymi tytułami prasowymi. Artykuł przedstawia kompletną panoramę polskiej prasy tabletowej. Ujętych zostało 38 aplikacji dostępnych 30 września 2011 r. Po zbadaniu wszystkich programów utworzono „mapę modeli biznesowych dystrybucji treści”. Czynnikiem decydującym o umieszczeniu na niej aplikacji prasowych była forma dystrybucji treści (płatna/bezpłatna oraz  rodzaj udostępnianej treści (powiązana z wydaniem drukowanym/powiązana z wydaniem online. Z analizy wynika, że 11 redakcji udostępnia płatne wydanie print, 10 – bezpłatne wydanie online, 7 – bezpłatne wydanie print, 3 – bezpłatne wydanie online oraz płatne wydanie print, jedna – oba wydania bezpłatnie, i jedna – oba wydania płatnie. Wywód uzupełniają dodatkowe dane: chronologiczna lista aplikacji prasowych według daty ukazania, wykaz kosztów korzystania z poszczególnych aplikacji, aktywność wydawców prasowych w App Store w rozbiciu na miesiące oraz kwartały.

  7. Prediction models for performance and emissions of a dual fuel CI ...

    Indian Academy of Sciences (India)

    use artificial intelligence modelling techniques like fuzzy logic, Artificial Neural Net- work (ANN), Genetic Algorithm (GA), etc. This paper uses a neuro fuzzy modelling technique, Adaptive Neuro Fuzzy Inference System (ANFIS) for developing predic- tion models for performance and emission parameter of a dual fuel engine.

  8. Aktualny model immunopatogenezy stwardnienia rozsianego – nowe możliwości terapeutyczne

    Directory of Open Access Journals (Sweden)

    Halina Bartosik-Psujek

    2014-07-01

    Full Text Available Etiologia stwardnienia rozsianego nadal nie została jednoznacznie wyjaśniona. U chorych występują: demielinizacja, odczyn zapalny, uszkodzenie aksonów i degeneracja oligodendrocytów. Zmiany dotyczą zarówno istoty białej, jak i szarej, ponadto wykazano, że również w pozornie niezmienionej istocie białej i szarej występuje rozlane uszkodzenie tkanek mózgu. Obecnie przyjmuje się autoimmunologiczny charakter schorzenia, na co wskazuje obecność u chorych licznych nieprawidłowości dotyczących reakcji komórkowych i humoralnych we krwi oraz w płynie mózgowo-rdzeniowym. Mechanizmy prowadzące do uszkodzenia struktur ośrodkowego układu nerwowego są wieloczynnikowe. Kluczową rolę odgrywają limfocyty T, ale włączone są także limfocyty B, komórki mikrogleju i makrofagi. Istotne jest znaczenie zależnych od demielinizacji czynników neurotoksycznych oraz zaburzeń metabolicznych, które mogą prowadzić do bezpośredniego uszkodzenia struktur ośrodkowego układu nerwowego. W pracy przedstawiono wyniki najnowszych badań dotyczących immunopatogenezy stwardnienia rozsianego. Opisano poszczególne etapy zaburzeń prowadzących do uszkodzenia ośrodkowego układu nerwowego: aktywację limfocytów i rolę komórek prezentujących antygen zarówno we krwi, jak i w obrębie ośrodkowego układu nerwowego, przejście przez barierę krew–mózg, funkcję limfocytów T i ich poszczególnych subpopulacji (Th1, Th2, Th17, znaczenie limfocytów B, przeciwciał i układu dopełniacza oraz demielinizację i mechanizmy uszkodzenia aksonów. Jednocześnie omówiono, jak na poszczególne etapy etiopatogenezy stwardnienia rozsianego wpływają leki stosowane w terapii choroby, uwzględniając również najnowsze preparaty będące na etapie badań klinicznych.

  9. Prediction models for performance and emissions of a dual fuel CI ...

    Indian Academy of Sciences (India)

    Dual fuel engines are being used these days to overcome shortage of fossil fuels and fulfill stringent exhaust gas emission regulations. They have several advantages over conventional diesel engines. In this context, this paper makes use of experimental results obtained from a dual fuel engine for developing models to ...

  10. Edukacja tubylcza a procesy rewitalizacji etnicznej autochtonicznych mniejszości – wybrane modele i egzemplifikacje

    OpenAIRE

    Gmerek, Tomasz

    2016-01-01

    The article deals with the issue of the relation between indigenous education and mainstream schooling in processes of autochtonous minorities ethnic revitalization. Particular emphasis was placed on reconstructing educational practices of indigenous schooling that is implemented toward indigenous minorities. An attempt was made at examining selected models of indigenous education concerning the relationship between schooling, language policy, teachers education and revitalization and develop...

  11. Modeling of Thermal Cycle CI Engine with Multi-Stage Fuel Injection

    Directory of Open Access Journals (Sweden)

    Arkadiusz Jamrozik

    2017-09-01

    Full Text Available This work presents a complete thermal cycle modeling of a four-stroke diesel engine with a three-dimensional simulation program CFD - AVL Fire. The object of the simulation was the S320 Andoria engine. The purpose of the study was to determine the effect of fuel dose distribution on selected parameters of the combustion process. As a result of the modeling, time spatial pressure distributions, rate of pressure increase, heat release rate and NO and soot emission were obtained for 3 injection strategies: no division, one pilot dose and one main dose and two pilot doses and one main dose. It has been found that the use of pilot doses on the one hand reduces engine hardness and lowers NO emissions and on the other hand, increases soot emissions.

  12. Modeling Solute Thermokinetics in LiCI-KCI Molten Salt for Nuclear Waste Separation

    Energy Technology Data Exchange (ETDEWEB)

    Morgan, Dane; Eapen, Jacob

    2013-10-01

    Recovery of actinides is an integral part of a closed nuclear fuel cycle. Pyrometallurgical nuclear fuel recycling processes have been developed in the past for recovering actinides from spent metallic and nitride fuels. The process is essentially to dissolve the spent fuel in a molten salt and then extract just the actinides for reuse in a reactor. Extraction is typically done through electrorefining, which involves electrochemical reduction of the dissolved actinides and plating onto a cathode. Knowledge of a number of basic thermokinetic properties of salts and salt-fuel mixtures is necessary for optimizing present and developing new approaches for pyrometallurgical waste processing. The properties of salt-fuel mixtures are presently being studied, but there are so many solutes and varying concentrations that direct experimental investigation is prohibitively time consuming and expensive (particularly for radioactive elements like Pu). Therefore, there is a need to reduce the number of required experiments through modeling of salt and salt-fuel mixture properties. This project will develop first-principles-based molecular modeling and simulation approaches to predict fundamental thermokinetic properties of dissolved actinides and fission products in molten salts. The focus of the proposed work is on property changes with higher concentrations (up to 5 mol%) of dissolved fuel components, where there is still very limited experimental data. The properties predicted with the modeling will be density, which is used to assess the amount of dissolved material in the salt; diffusion coefficients, which can control rates of material transport during separation; and solute activity, which determines total solubility and reduction potentials used during electrorefining. The work will focus on La, Sr, and U, which are chosen to include the important distinct categories of lanthanides, alkali earths, and actinides, respectively. Studies will be performed using LiCl-KCl salt

  13. Modelos para estimativa do subfator cobertura-manejo (CiII relativo à erosão entressulcos Models in predicting cover-management subfactor (CiII for interrill erosion

    Directory of Open Access Journals (Sweden)

    Marcílio V. Martins Filho

    2004-12-01

    Full Text Available A análise de um modelo de erosão é um crítico passo no desenvolvimento de uma ferramenta de predição da erosão aplicável e válida; isso é crucial para avaliar o desempenho dos modelos existentes para assegurar que as estimativas de um modelo condizem com a realidade. O objetivo do presente trabalho foi avaliar modelos para a predição do subfator cobertura e manejo (CiII relativo à erosão entressulcos. Um experimento fatorial completo foi conduzido com cinco doses de resíduo de milho (0; 0,05; 0,15; 0,40 e 0,80 kg m-2, quatro declives e duas repetições, sob condições de prévio umedecimento para determinar as taxas de erosão entressulcos (Di e enxurrada (R. Num primeiro experimento, foi avaliada a erodibilidade entressulcos (Ki e o subfator cobertura e manejo (CiII, em parcelas experimentais de 0,5 x 0,75 m, em solo recentemente preparado. Num segundo experimento, foram avaliados Di, R, Ki e CiII, também em parcelas de 0,5 x 0,75 m, em solo recém- preparado. Os valores de Di, R, Ki e CiII, obtidos no segundo experimento, foram utilizados na avaliação dos modelos testados. Os modelos CiII = e-2,50 CS/100 e CiII = e -2,238 CS/100 apresentaram boas estimativas para o subfator CiII.Analysis of erosion model is a critical step in developing an usable and valid erosion prediction tool; it is crucial to evaluate the performance of the models being used to ensure that the model predictions are realistic. The objective of the present work was to evaluate the performance of models in predicting cover-management subfactor (CiII for interrill erosion. A complete factorial rainfall simulation experiment with five corn stalk residue cover (0; 0.05; 0.15; 0.40 and 0.80 kg m-2, four slopes, and two replicates was conducted under prewetted conditions to mesure sediment delivery (Di and runoff (R. In this first experiment was evaluated interrill erodibility (Ki and the soil cover effect (CiII, on experimental plots of 0.5 x 0.75 m on

  14. Project Ci-Nergy Towards AN Integrated Energy Urban Planning System from a Data Modelling and System Architecture Perspective

    Science.gov (United States)

    Agugiaro, G.; Robineau, J.-L.; Rodrigues, P.

    2017-09-01

    Growing urbanisation, its related environmental impacts, and social inequalities in cities are challenges requiring a holistic urban planning perspective that takes into account the different aspects of sustainable development. One crucial point is to reconcile urban planning with environmental targets, which include decreasing energy demand and CO2 emissions, and increasing the share of renewable energy. Within this context, the project CI-NERGY aims to develop urban energy modelling, simulation and optimisation methods and tools to support decision making in urban planning. However, there are several barriers to the implementation of such tools, such as: fragmentation of involved disciplines, different stakeholders, multiplicity of scales in a city and extreme heterogeneity of data regarding all the processes to be addressed. Project CI-NERGY aims, among other goals, at overcoming these barriers, and focuses on two case study cities, Geneva in Switzerland and Vienna in Austria. In particular, project CI-NERGY faces several challenges starting with different cities, heterogeneous data sources and simulation tools, diverse user groups and their individual needs. This paper describes the experiences gathered during the project. After giving a brief overview of the project, the two case study cities, Geneva and Vienna, are briefly presented, and the focus shifts then on overall system architecture of the project, ranging from urban data modelling topics to the implementation of a Service-Oriented Architecture. Some of the challenges faced, the solutions found, as well some plans for future improvements are described and commented.

  15. A Microscopic Capacitor Model of Voltage Coupling in Membrane Proteins: Gating Charge Fluctuations in Ci-VSD.

    Science.gov (United States)

    Kim, Ilsoo; Warshel, Arieh

    2016-01-28

    The voltage sensitivity of membrane proteins is reflected in the response of the voltage sensing domains (VSDs) to the changes in membrane potential. This response is implicated in the displacement of positively charged residues, associated with the conformational changes of VSDs. The displaced charges generate nonlinear (i.e., voltage-dependent) capacitance current called the gating current (and its corresponding gating charge), which is a key experimental quantity that characterizes voltage activation in VSMP. However, the relevant theoretical/computational approaches, aimed to correlate the structural information on VSMP to electrophysiological measurements, have been rather limited, posing a broad challenge in computer simulations of VSMP. Concomitant with the development of our coarse-graining (CG) model of voltage coupling, we apply our theoretical framework for the treatments of voltage effects in membrane proteins to modeling the VSMP activation, taking the VSDs (Ci-VSD) derived from the Ciona intestinalis voltage sensitive phosphatase (Ci-VSP) as a model system. Our CG model reproduces the observed gating charge of Ci-VSD activation in several different perspectives. In particular, a new closed-form expression of the gating charge is evaluated in both nonequilibrium and equilibrium ways, while considering the fluctuation-dissipation relation that connects a nonequilibrium measurement of the gating charge to an equilibrium measurement of charge fluctuations (i.e., the voltage-independent linear component of membrane capacitance). In turn, the expression uncovers a novel link that connects an equilibrium measurement of the voltage-independent linear capacitance to a nonequilibrium measurement of the voltage-dependent nonlinear capacitance (whose integral over voltage is equal to the gating charge). In addition, our CG model yields capacitor-like voltage dependent free energy parabolas, resulting in the free energy difference and the free energy barrier for

  16. 40 CFR Table 2 to Subpart IIIi of... - Emission Standards for 2008 Model Year and Later Emergency Stationary CI ICE

    Science.gov (United States)

    2010-07-01

    ... SOURCES Standards of Performance for Stationary Compression Ignition Internal Combustion Engines Part 60... Emergency Stationary CI ICE Engine power... and Later Emergency Stationary CI ICE 2 Table 2 to Subpart IIII of Part 60 Protection of Environment...

  17. Photocatalytic removal of C.I. Basic Red 46 on immobilized TiO2 nanoparticles: artificial neural network modelling.

    Science.gov (United States)

    Khataee, A R

    2009-10-01

    C.I. Basic Red 46, commonly used as a textile dye, was photocatalytically removed using supported TiO2 nanoparticles irradiated by a 30 W UV-C lamp in a batch reactor. The investigated photocatalyst was industrial Degussa P25 (crystallite mean size 21 nm) immobilized on glass beads by a heat attachment method. The catalyst was characterized by XRD, SEM, TEM and BET techniques. The process of the dye decolorization in the presence of TiO2 nanoparticles was experimentally studied through changing the initial dye concentration, UV light intensity and initial pH. The influence of inorganic anions such as chloride, sulphate, bicarbonate, carbonate and phosphate on the photocatalytic decolorization of BR46 was investigated. The decolorization of BR46 follows the pseudo-first-order kinetic according to the Langmuir-Hinshelwood model (k1 = 0.273 mg L(-1) min(-1), 2 = 0.313 (mg L(-1))(-1)). The efficiency parameters such as apparent quantum yield and electrical energy per order (EEO) were estimated. An artificial neural network model (ANN) was developed to predict the photocatalytic decolorization of BR46 solution. The findings indicated that the ANN provided reasonable predictive performance (R2 = 0.96). The influence of each parameter on the variable studied was assessed: initial concentration of the dye being the most significant factor, followed by the initial pH and reaction time.

  18. Application of zero-dimensional thermodynamic model for predicting combustion parameters of CI engine fuelled with biodiesel-diesel blends

    Directory of Open Access Journals (Sweden)

    V. Hariram

    2016-12-01

    Full Text Available Biodiesel from non-edible vegetable oil seems to be a promising alternate for petro-diesel in the present energy scenario. This study analyses the experimental and theoretical effects on the blends of Bee Wax biodiesel with straight diesel on combustion parameters. A zero-dimensional mathematical model is developed to analyse the rise in in-cylinder pressure along with Wiebie’s heat release correlations, ignition delay, gas dynamics model, heat transfer model and frictional model. The combustion parameters include in-cylinder pressure rise, net heat release and rate of pressure rise are investigated and found to be higher for straight diesel and deteriorated with the increase in blends of BWB. The theoretical simulation also supports the experimental data with constant injection timing, speed and compression ratio.

  19. Phase Behavior of Aqueous NA-K-MG-CA-CI-NO3 Mixtures: Isopiestic Measurements and Thermodynamic Modeling

    Energy Technology Data Exchange (ETDEWEB)

    M.S. Gruszkiewiez; D.A. Palmer; R.D. Springer; P. Wang; A. Anderko

    2006-09-14

    A comprehensive model has been established for calculating thermodynamic properties of multicomponent aqueous systems containing the Na{sup +}, K{sup +}, Mg{sup 2+}, Ca{sup 2+}, Cl{sup -}, and NO{sub 3}{sup -} ions. The thermodynamic framework is based on a previously developed model for mixed-solvent electrolyte solutions. The framework has been designed to reproduce the properties of salt solutions at temperatures ranging from the freezing point to 300 C and concentrations ranging from infinite dilution to the fused salt limit. The model has been parameterized using a combination of an extensive literature database and new isopiestic measurements for thirteen salt mixtures at 140 C. The measurements have been performed using Oak Ridge National Laboratory's (ORNL) previously designed gravimetric isopiestic apparatus, which makes it possible to detect solid phase precipitation. Water activities are reported for mixtures with a fixed ratio of salts as a function of the total apparent salt mole fraction. The isopiestic measurements reported here simultaneously reflect two fundamental properties of the system, i.e., the activity of water as a function of solution concentration and the occurrence of solid-liquid transitions. The thermodynamic model accurately reproduces the new isopiestic data as well as literature data for binary, ternary and higher-order subsystems. Because of its high accuracy in calculating vapor-liquid and solid-liquid equilibria, the model is suitable for studying deliquescence behavior of multicomponent salt systems.

  20. (Human) Resourcing For CI

    DEFF Research Database (Denmark)

    Jørgensen, Frances; S., Jacob; Kofoed, Lise Busk

    2005-01-01

    challenging in organizations involved in change processes such as Continuous Improvement (CI), as the technical skills traditionally valued are no longer adequate. These companies are faced with the question: “What competencies should our employees possess in order to contribute to our success, given......More and more, the ability to compete in today’s market is viewed as being dependent on human capital. One of the most challenging aspects of human resource management involves supplying the organization with the human capital necessary to fulfill its objectives. This task becomes especially...... the change processes in which we are engaged?” Without a clear picture of the types of competencies required to implement CI, it is impossible for companies to make informed decisions regarding recruitment, hiring, and training of their workforce. The objective of this paper is therefore to define...

  1. Development and analysis of the Original UNIFAC-CI model for prediction of vapor–liquid and solid–liquid equilibria

    DEFF Research Database (Denmark)

    Mustaffa, Azizul Azri; Gani, Rafiqul; Kontogeorgis, Georgios

    2014-01-01

    sets, only VLE experimental data were used in parameter estimation. In the first set, no weighting factors were used for each of the VLE data in the objective function when regressing the AIPs. However, for the second set, the AIPs have been regressed using the so-called QVLE quality factors obtained...... for each of the VLE data from a quality assessment algorithm (consistency tests) as weighting factors in the objective functions. For the third set of parameters, SLE and VLE data were used in the regression of AIPs. The result of the correlations in terms of deviations errors and predictions using......In this work, we present a further development and analysis of the Original UNIFAC-CI models for the prediction of vapor–liquid equilibrium (VLE) and solid–liquid equilibrium (SLE) for a wide range of mixtures. Three sets of atom interaction parameters (AIPs) have been regressed. For the first two...

  2. 40 CFR 60.4208 - What is the deadline for importing or installing stationary CI ICE produced in the previous model...

    Science.gov (United States)

    2010-07-01

    ... Combustion Engines Other Requirements for Owners and Operators § 60.4208 What is the deadline for importing..., owners and operators may not install stationary CI ICE (excluding fire pump engines) that do not meet the... not install stationary CI ICE with a maximum engine power of less than 19 KW (25 HP) (excluding fire...

  3. Partial Factors in Modelling of Steel Structures Reliability According to Eurocodes / Współczynniki Częściowe W Eurokodowym Modelu Niezawodności Konstrukcji Stalowych

    Directory of Open Access Journals (Sweden)

    Stachura Zbigniew

    2015-03-01

    Full Text Available Stan graniczny nośności konstrukcji, projektowanej w tradycyjnym podejściu na podstawie efektów oddziaływań jest oceniany z niezawodnościowego modelu szeregowego. Kalibrację współczynników częściowych do nośności przeprowadza się wówczas na podstawie analizy niezawodności pojedynczego elementu konstrukcji (pręta lub węzła. Eurokod stalowy [4] wprowadził zasady projektowania bazujące na bardziej złożonych modelach nośności niż w [8], gdyż stan graniczny można ocenić na podstawie warunku stateczności technicznej podukładu konstrukcji lub w ogólności, jak przedstawia to warunek (2.1 - na podstawie punktu granicznego na ścieżce równowagi wyznaczonej dla nieidealnego modelu całej konstrukcji. Pojawia się pytanie, czy stosowanie do nośności wyznaczonej na podstawie bardziej złożonych modeli mechaniki konstrukcji współczynników częściowych wyspecyfikowanych do oceny nośności pojedynczych elementów prowadzi do bezpiecznych oszacowań. Kalibracja współczynników częściowych w metodzie stanów granicznych może być dokonana przy różnych założeniach wyjściowych. Model niezawodności i ogólne zasady przyjętego w eurokodach rozdziału docelowego wskaźnika niezawodności na składowe odnoszące się do ustalenia obliczeniowych oddziaływań i ich kombinacji oraz do ustalania nośności obliczeniowej zostały podane w eurokodzie [1]. W artykule przedstawiono zagadnienia dotyczące przyjęcia współczynników częściowych do nośności układu lub podukładu konstrukcyjnego. Opisano eurokodową procedurę wykorzystującą wyniki badań doświadczalnych do kalibracji współczynników częściowych do nośności.

  4. Modeling Molecular Systems at Extreme Pressure by an Extension of the Polarizable Continuum Model (PCM) Based on the Symmetry-Adapted Cluster-Configuration Interaction (SAC-CI) Method: Confined Electronic Excited States of Furan as a Test Case.

    Science.gov (United States)

    Fukuda, Ryoichi; Ehara, Masahiro; Cammi, Roberto

    2015-05-12

    Novel molecular photochemistry can be developed by combining high pressure and laser irradiation. For studying such high-pressure effects on the confined electronic ground and excited states, we extend the PCM (polarizable continuum model) SAC (symmetry-adapted cluster) and SAC-CI (SAC-configuration interaction) methods to the PCM-XP (extreme pressure) framework. By using the PCM-XP SAC/SAC-CI method, molecular systems in various electronic states can be confined by polarizable media in a smooth and flexible way. The PCM-XP SAC/SAC-CI method is applied to a furan (C4H4O) molecule in cyclohexane at high pressure (1-60 GPa). The relationship between the calculated free-energy and cavity volume can be approximately represented with the Murnaghan equation of state. The excitation energies of furan in cyclohexane show blueshifts with increasing pressure, and the extents of the blueshifts significantly depend on the character of the excitations. Particularly large confinement effects are found in the Rydberg states. The energy ordering of the lowest Rydberg and valence states alters under high-pressure. The pressure effects on the electronic structure may be classified into two contributions: a confinement of the molecular orbital and a suppression of the mixing between the valence and Rydberg configurations. The valence or Rydberg character in an excited state is, therefore, enhanced under high pressure.

  5. IMPACT 2002+, ReCiPe 2008 and ILCD’s recommended practice for characterization modelling in life cycle impact assessment: a case study-based comparison

    DEFF Research Database (Denmark)

    Owsianiak, Mikolaj; Laurent, Alexis; Bjørn, Anders

    2014-01-01

    Purpose The European Commission has launched a recommended set of characterization models and factors for application in life cycle impact assessment (LCIA). However, it is not known how this recommended practice, referred to as the ILCD 2009, performs relative to some of the most frequently used...... and ecosystems, all studied methodologies consistently identify the same window option as having the lowest and the highest environmental impact. This is mainly because few processes, associated with production of heat, dominate the total impacts, and there is a large difference in demand for heat between...... categories. The differences are somewhat smaller (within 1 order of magnitude) for the impact categories respiratory inorganics and photochemical ozone formation, and are within a factor of 3 for the remaining impact categories. The differences in impact scores in our case study are brought about...

  6. Orbital imaging and assessment of different orbital models for the valence shell of methanol. Comparison of electron momentum spectroscopy measurements with near-Hartree-Fock limit, MRSD-CI, localized valence bond and density functional theory

    Science.gov (United States)

    Rolke, J.; Zheng, Y.; Brion, C. E.; Shi, Z.; Wolfe, Saul; Davidson, E. R.

    1999-06-01

    ' momentum profile. The shapes of the experimental momentum profiles for the 4a' and 3a' are well-reproduced by large basis set HF and DFT calculations. In addition, nearly all the inner valence 4a' pole strength is found in the 20-28 eV region while the high-energy 28-47 eV region contains virtually all of the 3a' pole strength. Lastly, the HOMO and NHOMO momentum profiles are compared to the corresponding localized molecular orbitals (LMO) (i.e. the `lone-pair' orbitals of VSEPR or qualitative VB theory), the canonical molecular orbitals (CMO) of molecular orbital (MO) theory and the Kohn-Sham orbitals (KSO) of DFT used in the present work. The experimental results unequivocally support the delocalized CMO and KSO models and are very different from the LMO description. Although electron correlation effects are also important at low momenta in the 7a' NHOMO this orbital is also basically a CMO or KSO in character as shown by the CI and DFT calculations. It is noteworthy that the KSOs of DFT, often described as fictitious mathematical concepts, in fact very closely fit the experimental results and are very similar to the CMOs given by HF or CI calculations of the full ion-neutral overlap where necessary. These conclusions have profound implications for computer-aided molecular design, molecular modelling and molecular recognition.

  7. Mathematical Kinetic Modelling and Representing Design Equation for a Packed Photoreactor with Immobilised TiO2-P25 Nanoparticles on Glass Beads in the Removal of C.I. Acid Orange 7

    Directory of Open Access Journals (Sweden)

    Sheidaei Behnaz

    2015-06-01

    Full Text Available In this work, a design equation was presented for a batch-recirculated photoreactor composed of a packed bed reactor (PBR with immobilised TiO2-P25 nanoparticle thin films on glass beads, and a continuous-flow stirred tank (CFST. The photoreactor was studied in order to remove C.I. Acid Orange 7 (AO7, a monoazo anionic dye from textile industry, by means of UV/TiO2 process. The effect of different operational parameters such as the initial concentration of contaminant, the volume of solution in CFST, the volumetric flow rate of liquid, and the power of light source in the removal efficiency were examined. A rate equation for the removal of AO7 is obtained by mathematical kinetic modelling. The results of reaction kinetic analysis indicate the conformity of removal kinetics with Langmuir-Hinshelwood model (kL-H = 0.74 mg L-1 min-1, Kads = 0.081 mg-1 L. The represented design equation obtained from mathematical kinetic modelling can properly predict the removal rate constant of the contaminant under different operational conditions (R2 = 0.963. Thus the calculated and experimental results are in good agreement with each other.

  8. Kuhn e as ciências sociais

    Directory of Open Access Journals (Sweden)

    Jesus de Paula Assis

    1993-12-01

    Full Text Available No texto, são expostos os motivos básicos pelos quais o vocabulário emprestado de Thomas Kuhn - notadamente o termo paradigma - e o modelo de desenvolvimento científico exposto pelo autor em seu A estrutura das revoluções científicas foram tomados de empréstimo em textos que discutem a epistemologia das ciências sociais. A conclusão é que as supostas aplicações do modelo kuhniano às ciências sociais se baseiam em leitura que não encontra qualquer apoio no autor e, principalmente, obscurecem as implicações mais amplas de sua obra.The article shows for what reasons the vocabulary and the model for scientific growth of Thomas Kuhn were borrowed by epistemologists of the social sciences. The conclusion is that the texts produced in this vein are based in a shallow understanding of the author's main implications.

  9. Nudności i wymioty

    Directory of Open Access Journals (Sweden)

    Anna Mokrowiecka

    2010-12-01

    Full Text Available Nudności są nieprzyjemnym, niebolesnym odczuciem silnej, nieodpartej potrzeby zwymiotowania, z kolei wymioty polegają na gwałtownym wydaleniu treści żołądka przez usta w wyniku silnych skurczów mięśni brzucha i klatki piersiowej. Nudności i wymioty mogą występować niezależnie od siebie, ale najczęściej są ze sobą powiązane. Nudności i wymioty powstają w odpowiedzi zarówno na bodźce fizjologiczne, jak i patologiczne. Zwykle jednak przewlekłe nudności i wymioty są objawem chorób przewodu pokarmowego lub innych narządów. Choroby przewodu pokarmowego i otrzewnej stanowią szeroką grupę chorób wywołujących nudności i wymioty, począwszy od nieżytu żołądkowo-jelitowego o ostrym infekcyjnym tle, przez zatrucie pokarmowe i nadwrażliwość pokarmową, do stanów ostrych – niedrożności jelita cienkiego lub/i grubego. Leki i toksyny, między innymi cytostatyki, są jedną z najczęstszych przyczyn nudności i wymiotów. Wśród innych przyczyn nudności i wymiotów można wymienić: choroby OUN prowadzące do zwiększenia ciśnienia śródczaszkowego, choroby endokrynologiczne i metaboliczne (mocznica, kwasica ketonowa w cukrzycy, choroby tarczycy i przytarczyc oraz choroba Addisona, zawał ściany dolnej mięśnia sercowego, nudności i wymioty pooperacyjne. Nudności i wymioty jako choroby czynnościowe zostały ujęte w III kryteriach rzymskich w punkcie „Choroby czynnościowe żołądka i dwunastnicy”. W diagnostyce różnicowej należy uwzględnić czas trwania wymiotów, czas pomiędzy posiłkiem a wystąpieniem wymiotów, a także charakter treści wymiocin i inne objawy towarzyszące. Wywiad i badanie fizykalne dostarczają zwykle wystarczających informacji do postawienia prawidłowej diagnozy i ustalenia leczenia u większości chorych cierpiących na nudności i wymioty. Niektórzy pacjenci wymagają jednak badań laboratoryjnych, obrazowych i endoskopowych przed zastosowaniem odpowiedniej

  10. ANALIZA NIEZAWODNOŚCI STACJI UZDATNIANIA WODY

    Directory of Open Access Journals (Sweden)

    Barbara TCHÓRZEWSKA-CIEŚLAK

    Full Text Available Systemy zbiorowego zaopatrzenia w wodę składają się z połączonych ze sobą elementów (podsystemów stanowiących integralna całość, współpracujących ze sobą w sposób ciągły w celu zapewnienia dla konsumentów wody o odpowiedniej jakości. W przypadku gdy jakość wody w źródle nie odpowiada normatywom stawianym wodzie przeznaczonej do spożycia przez ludzi, woda musi być poddana procesom uzdatniania. Niezawodność funkcjonowania stacji uzdatniania wody jest jednym z podstawowych elementów szeroko rozumianej analizy niezawodności i bezpieczeństwa całego systemu zbiorowego zaopatrzenia w wodę. Niezawodność dostawy wody polega na zapewnieniu stabilnych warunków, umożliwiających pokrycie bieżącego i perspektywicznego zapotrzebowania na wodę w odpowiedniej ilości i wymaganej jakości w dowolnym, dogodnym dla konsumentów wody czasie. W pracy przedstawiono podstawy analizy niezawodności, podano podstawowe miary oraz zasady wykorzystania struktur niezawodnościowych. Obliczenia wykonano dla stacji uzdatniania wody na podstawie schematu niezwodnościowego metodą jednoparametryczną. Na podstawie danych z eksploatacyjnych stacji uzdatniania wody (SUW wchodzącej w skład systemu zbiorowego zaopatrzenia w wodę miasta liczącego ok 80 tys. mieszkańców sporządzono schemat niewodności stacji oraz przeprowadzono obliczenia wskaźnika gotowości K. W metodzie wykorzystano podstawowe struktury niezawodnościowe. Wyznaczoną miarę niezawodności porównano z wartościami kryterialnymi.

  11. Language Practices in the Ci-Classroom

    DEFF Research Database (Denmark)

    Mourtou, Eleni

    2014-01-01

    Prelingually deafened children are nowadays likely to receive a cochlear implant (ci). As these children do their language acquisition with a cochlear implant they require a constant rehabilitation and support. Educational staff is instructed on how to work with children with ci in form of guidel......Prelingually deafened children are nowadays likely to receive a cochlear implant (ci). As these children do their language acquisition with a cochlear implant they require a constant rehabilitation and support. Educational staff is instructed on how to work with children with ci in form...... of guidelines and workshops. This paper discusses language practices used in the setting of a school for cochlear-implanted children. These children encounter language and pronunciation problems that accompany prelingual deafness and hearing with a cochlear implant. I examine two practices, which are used...... during the storytelling activity: repeat requests and questions. Whereas repeat requests are used in ci-therapy, questions have been shown to be instrumentalized for educational purposes in the setting of a school. I will reveal the educational/rehabilitational issues that are linked to these practices....

  12.  Spis treści

    Directory of Open Access Journals (Sweden)

    Mieczysław Dobija

    2014-04-01

    Full Text Available  Od Zespołu Redakcyjnego ............................................................................... 5 Mieczysław Dobija – Rachunkowość w systemie pomiaru aktywności ekonomicznej państwa – Accounting as part of an economic activity measurement system ............... 7 Renata Dyląg, Ewelina Puchalska – Raportowanie zagadnień środowiskowych i społecznych – Reporting on social and environmental issues .............................................. 23 Jacek Gad – Sprawozdanie z wyniku całościowego jako źródło informacji na temat kapitałowych przychodów i kosztów – doświadczenia polskiego i niemieckiego rynku kapitałowego – Statement of comprehensive income as a source of information on capital income and expenses – experience of Polish and German capital markets...... 47 Piotr Luty – Ocena kondycji finansowej łączących się spółek na przykładzie jednostek z wybranych województw Polski Zachodniej – Assessment of financial position of merging companies based on selected provinces of Western Poland ............................................................................ 69 Irena Sobańska – Znaczenie dorobku naukowego Profesor Elżbiety Burzym dla rozwoju nauki i praktyki rachunkowości w Polsce – The importance of Professor Elżbieta Burzym’s contribution to the development of accounting theory, research and practice in Poland ........................ 83 Arleta Szadziewska – Rachunkowość jako źródło informacji na temat realizacji strategii społecznej odpowiedzialności biznesu – Accounting as a source of information for CSR strategy ............................. 95 Halina Waniak-Michalak – Informacja o pracy wolontariuszy w sprawozdaniach organizacji pożytku publicznego w Polsce – Information on volunteer labour in reports of public benefit organizations in Poland ............................................................................................................ 125

  13. Cognitivismo e ciência cognitiva

    Directory of Open Access Journals (Sweden)

    Marcos Barbosa de Oliveira

    1990-01-01

    Full Text Available O objetivo da comunicação é caracterizar uma escola de pensamento-o cognitivismo-e a disciplina a que ela deu origem. Depois de um breve apanhado das origens do cognitivismo descrevem-se os princípios ontológicos e metodológicos que o definem. Mostra-se a seguir a relação que há entre os computadores e a idéia funcionalista de considerar a mente como um sistema cujos elementos são caracterizados por suas funções, e não por sua constituição material. Discute-se finalmente a natureza e o nome da disciplina gerada pelo cognitivismo, sugerindo-se que se trata de uma proto-ciência, a qual deve ser denominada "Estudos Cognitivos" de preferência a "Ciência Cognitiva".

  14. Kierunki zmiansprawozdawczości finansowej

    Directory of Open Access Journals (Sweden)

    Zbigniew Luty

    2010-05-01

    Full Text Available W artykule wskazano na możliwe kierunki zmian w sprawozdawczości finansowej w najbliższych latach. Wymieńmy najważniejsze: 1 bazą jest informacja oparta na dokumentacji księgowej w ujęciu historycznym, 2 sprawozdania celowe (dedykowane, 3 informacja finansowa jako towar na specyficznym rynku sprawozdań, 4 prawo bilansowe tworzone z minimalnym wpływem lobbingu inwestorów.

  15. Fé perceptiva, filosofia e ciência

    Directory of Open Access Journals (Sweden)

    Adilson Xavier da Silva

    2010-09-01

    Full Text Available O objetivo de nosso artigo é compreender as noções de fé perceptiva, filosofia e ciência em Le visible et l’invisible (1964. Essas noções nos devem levar a um dos pontos fundamentais do pensamento merleau-pontyano, em que a interrogaçáo ontológica parte essencialmente da fé perceptiva para chegar a uma ontologia da carne.

  16. An analysis of vowel harmony in ciNsenga and ciCewa: A ...

    African Journals Online (AJOL)

    This article presents an analysis of vowel harmony that occurs in the verbal system of ciNsenga and ciCewa. In these languages the nature of suffix vowels is determined by the nature of the root: mid vowels trigger the vowel /ε/ on the suffixes, non-mid vowels, on the other hand, trigger the vowel /i/ on the suffixes.

  17.  Spis treści

    Directory of Open Access Journals (Sweden)

    ANNA BARTOSZEWICZ

    2015-03-01

    Full Text Available  Od Zespołu Redakcyjnego – Editorial .......................................................................................................... 7 Anna Bartoszewicz – Praktyczna realizacja Programu zapewnienia i poprawy jakości w komórkach audytu wewnętrznego na wybranych przykładach – Implementation of Quality Assurance and Improvement Program by internal audit teams on selected examples ................................................................ 9 Anna Białek-Jaworska, Natalia Nehrebecka – Struktura kapitałowa przedsiębiorstw w świetle wyników badań – Capital structure of companies in the light of research results ..................... 29 Magda Chraścina – Determinanty tworzenia rezerw oraz ich skutki bilansowo- -wynikowe na przykładzie spółek notowanych na Giełdzie Papierów Wartościowych w Warszawie – Determinants of creating provisions and their effect on the balance sheet and income statement on the example of companies listed on the Warsaw Stock Exchange .................................................................................................. 53 Małgorzata Garstka – Dobry obyczaj jako norma kształtująca zachowanie księgowych – Good practice as a norm shaping the behavior of accountants ...................... 73 Przemysław Kabalski, Joanna Szwajcar – Feminizacja studiów w zakresie rachunkowości w Polsce – przyczyny i skutki – Feminization of accounting studies in Poland – causes and consequences .. 85 Anna Kasperowicz – Znaki i kody rachunkowości w procesie komunikacji – Accounting signs and codes in the communication process .......................... 107 Marcin Kędzior – Dobrowolne stosowanie MSSF przez spółki giełdowe w wybranych krajach Europy Zachodniej – Voluntary adoption of IFRS by listed companies in selected Western European countries ................................................................................................. 123 Ewelina Zarzycka

  18. Wycena należności kredytowycha standardy sprawozdawczości finansowej

    Directory of Open Access Journals (Sweden)

    Izabela Emerling

    2009-12-01

    Full Text Available Jednym z najistotniejszych obszarów działalności banków komercyjnych jest działalność kredytowa, której sposób ujęcia w księgach rachunkowych i sprawozdaniach finansowych determinuje obraz sytuacji majątkowej i finansowej odzwierciedlony w sprawozdawczości finansowej banku komercyjnego. Podstawowym celem artykułu jest zbadanie ujęcia w sprawozdaniach finansowych banków komercyjnych różnych form działalności kredytowej i ich metod wyceny. Zastosowanie różnych metod wyceny bilansowej wierzytelności kredytowych wpływa na obraz sytuacji majątkowej i finansowej banku komercyjnego.

  19. Model Podejmowania Decyzji w Oparciu o Wartości Służący Ocenie Wariantów Systemu Monitorowania Stanu Technicznego Struktury Statków Powietrznych z Punktu Widzenia Wymagań Użytkownika Wojskowego

    Directory of Open Access Journals (Sweden)

    Klimaszewski Sławomir

    2016-12-01

    Full Text Available Niniejszy artykuł opisuje model podejmowania decyzji w oparciu o wartości (ang. Value-Focused Thinking - VFT opracowany w celu oceny różnych wariantów wdrożenia systemu monitorowania stanu technicznego struktury (ang. Structural Health Monitoring - SHM wojskowego statku powietrznego. Rozpatruje się cztery warianty wspomnianego systemu (SHM oparte na: kontroli wzrokowej (aktualne podejście, czujnikach piezoelektrycznych (PZT, czujnikach światłowodowych z siatką Bragga (FBG i czujnikach próżniowych (Comparative Vacuum Monitoring - CVM. Przedstawiono przykład numeryczny w celu zilustrowania możliwości modelu. Analizy wrażliwości są wykonane dla takich wartości jak koszt, wydajność, dostępność statku powietrznego oraz poziom gotowości technologicznej (Technology Readiness Level - TRL, aby zbadać wpływ tych parametrów na całkowitą wartość informacji z zakresu stanu technicznego struktury dostarczanych przez określony wariant systemu SHM.

  20. Ciência Cognitiva e Ciência da Informação: paralelos

    OpenAIRE

    Andalécio, Aleixina Lopes; UFMG; Souza, Renato Rocha; ECI/UFMG

    2008-01-01

    Apresenta teorias sobre o desenvolvimento cognitivo e abordagens sobre a aquisição do conhecimento. Relaciona essas abordagens com os modelos da Ciência da Informação, e analisa a aquisição do conhecimento. Sugere o desenvolvimento de um trabalho multidisciplinar entre as áreas Cognição e Ciência da Informação, que permita uma linguagem comum entre as áreas.

  1. Natureza e ciências sociais

    Directory of Open Access Journals (Sweden)

    Gloria Maria Vargas

    2003-12-01

    Full Text Available A construção do sentido do termo natureza abrange diferentes áreas do conhecimento e tem sido objeto de reflexão tanto das ciências naturais quanto sociais. Nos desdobramentos do conhecimento produzido sobre esta temática existem diversas abordagens que, da perspectiva das ciências sociais, podem ser identificadas. O propósito deste artigo é considerar algumas dessas abordagens e relacioná-las com as novas práticas sociais que determinam formas de intervenção inéditas sobre a natureza, e que colocam questões para estas ciências, enquanto produtoras de conhecimento sobre o tema. De igual forma, explicita-se a substituição deste termo pelo de ambiente e, posteriormente, o aparecimento do desenvolvimento sustentável, como parte do cabedal conceitual com que a problemática em torno das relações naturezasociedade é abordada nas ciências sociais.La construcción del sentido del término naturaleza abarca diferentes áreas del conocimiento y ha sido objeto de reflexión tanto de las ciencias naturales como sociales. Los desdoblamientos del conocimiento producido sobre este tema muestran que existen diversos abordajes que pueden ser identificados desde la perspectiva de las ciencias sociales. El objetivo de este artículo es considerar algunos de esos abordajes y relacionarlos con las nuevas prácticas sociales que determinan formas de intervención inéditas sobre la naturaleza y que sugieren cuestionamientos para estas ciencias, como productoras de conocimiento sobre este tema. De igual manera, se explicita la substitución de este término por el de ambiente e, posteriormente, el aparecimiento del término desarrollo sostenible como parte del acervo conceptual con que es abordada la problemática alrededor de las relaciones naturaleza-sociedad en las ciencias sociales.The construction of the term nature involves different areas of knowledge and has been the object of inquiry of both natural and social sciences. The knowledge

  2. Static Code Analysis with Gitlab-CI

    CERN Document Server

    Datko, Szymon Tomasz

    2016-01-01

    Static Code Analysis is a simple but efficient way to ensure that application’s source code is free from known flaws and security vulnerabilities. Although such analysis tools are often coming with more advanced code editors, there are a lot of people who prefer less complicated environments. The easiest solution would involve education – where to get and how to use the aforementioned tools. However, counting on the manual usage of such tools still does not guarantee their actual usage. On the other hand, reducing the required effort, according to the idea “setup once, use anytime without sweat” seems like a more promising approach. In this paper, the approach to automate code scanning, within the existing CERN’s Gitlab installation, is described. For realization of that project, the Gitlab-CI service (the “CI” stands for "Continuous Integration"), with Docker assistance, was employed to provide a variety of static code analysers for different programming languages. This document covers the gene...

  3. Filosofia da ciência e ensino da ciência: uma analogia

    Directory of Open Access Journals (Sweden)

    Alberto Villani

    2001-01-01

    Full Text Available Neste trabalho, inicialmente explicitaremos nossa compreensão do debate entre Kuhn, Popper, Lakatos e Feyerabend na Conferencia Internacional sobre Filosofia da Ciência (1965, delineando as diferenças nas posições de nossos filósofos. Em seguida apresentaremos um quadro das posições sobre o ensino de ciências, assim como nos parecem caracterizar os último 30 anos de pesquisas na área. Finalmente tentaremos uma aproximação dos dois campos, procurando salientar as implicações que a problemática filosófica teve e tem para uma maior compreensão do ensino de ciências e matemática.

  4. Elites acadêmicas: as ciências sociais na Academia Brasileira de Ciências

    Directory of Open Access Journals (Sweden)

    Ana Paula Hey

    Full Text Available Resumo O objetivo do artigo consiste em evidenciar certo padrão de carreira científica dos trinta membros da seção de ciências sociais da centenária Academia Brasileira de Ciências. Criada em 2000, a área é composta por antropologia, demografia, ciência política, economia, geografia, história, relações internacionais e sociologia, disciplinas que materializam hierarquias e diferenciações. Os Acadêmicos são caracterizados por uma série de elementos: origem geográfica, gênero, idade e formação científica. Evidencia-se que os percursos de formação do capital científico e de notoriedade mesclam-se ao da construção das instituições e dos suportes que viabilizaram a institucionalização dessas ciências entre os anos de 1960 e 1980. As elites acadêmicas ora construídas evidenciam um modo de consagração que tem como princípio a condução do reconhecimento seletivo dos pares. Essa ação simbólica revela os traços das condições sociais de possibilidade da vida acadêmica no país.

  5. Synergy between Competitive Intelligence (CI), Knowledge Management (KM) and Technological Foresight (TF) as a strategic model of prospecting--the use of biotechnology in the development of drugs against breast cancer.

    Science.gov (United States)

    Canongia, Claudia

    2007-01-01

    The aim of this paper is to demonstrate the synergy between Competitive Intelligence, Knowledge Management and Technological Foresight, and to emphasize the proposal of a strategic model of data prospecting as a mechanism to support decision-making in regard to three approaches for sustainable development and innovation: technological, social and economic. The use of biotechnology in the development of drugs against breast cancer is the case study. The article shows the results of data and text mining in specialized medical and patent databases, identifying the most frequently cited drugs, as well as the authors of research, and the inventors of new technology at the beginning of the 21st century. In addition, the study includes reference to Brazilian competence in breast cancer area, the international trends in drugs for treatment of this cancer, leading international institutions and Brazilian competencies. A framework is presented, which could serve as a guide and support for the decision-making process.

  6. Numerical Modelling of Metal/Flux Interface in a Continuous Casting Mould / Modelowanie Numeryczne Powierzchni Międzyfazowej Metal/Ciekły Żużel W Krystalizatorze Do Ciągłego Odlewania Stali

    Directory of Open Access Journals (Sweden)

    Jowsa J.

    2015-12-01

    Full Text Available The behaviour of liquid slag in the mould is one of the key research areas of the continuous steel casting process. Numerical simulations of steel casting in the mould equipped with submerged entry nozzle, intended for slab casting, have been carried out within the study. For modelling the behaviour of the interfaces of the liquid steel - liquid slag - air system, the VOF method was employed. In the conducted simulations, seven different procedures for the discretization of the interface of individual phases were tested. The computation results have revealed that the “entrapment” of fine slag portions into liquid steel occurs in the system under investigation; the cause of this phenomenon is explicated by the Kelvin-Helmholtz theory.

  7. O contributo das ciências sociais para a análise de acidentes maiores: dois modelos em confronto The contribution of social sciences to analysis of major accidents: two models in comparison

    Directory of Open Access Journals (Sweden)

    João Areosa

    2012-07-01

    Full Text Available Os acidentes maiores são um problema social relevante, dado que podem afetar alguns pilares importantes das sociedades contemporâneas, como as populações, as infraestruturas ou as próprias organizações onde estes eventos ocorrerem. Este tipo de acidentes surge em organizações de alto-risco, onde interagem, entre outros, aspetos de natureza técnica, tecnológica, social e organizacional. Neste artigo confrontamos a perspetiva das organizações de alta fiabilidade e a teoria dos acidentes normais, explorando as principais virtudes e limites de cada um destes modelos. Iremos verificar que o seu modo de compreender os acidentes, bem como as formas de prevenção propostas são parcialmente antagónicos.Major accidents are a relevant social problem, because they can affect certain important pillars of contemporary societies such as population, infrastructures, and the very organizations in which the events occurred. Major accidents arise in high-risk organizations, where technical, technological, social, and organizational factors interact. In this paper we confront the theory of High Reliability Organizations (HRO and the Normal Accidents Theory (NAT, exploring the virtues and limitations of each model.

  8. O homem e as ciências da natureza

    OpenAIRE

    Archer, Luís

    1985-01-01

    1. Introdução 2. Como homem e ciências da natureza entram em confronto 3. O homem que se projecta nas ciências da natureza 4. As ciências da natureza que se projectam no homem 5. Homem e ciências da natureza em interprojecção: o futuro

  9. Causas e leis nas ciências do homem

    Directory of Open Access Journals (Sweden)

    Sara Albieri

    2011-12-01

    Full Text Available A proposta humeana acerca do método e da investigação na ciência do homem tornou-o um precursor do conhecido modelo covering-law de explicação científica, tal como defendido por Hempel, Nagel e outros filósofos contemporâneos da ciência. A interpretação da teoria da ciência de Hume como precursora desse modelo costuma ser majoritária entre os comentadores de sua filosofia. Apenas Donald Livingston travou uma discussão singular contra essa quase unanimidade, propondo-se a defender a existência de dois modelos de explicação na epistemologia de Hume, um adequado às ciências naturais, outro às morais. O autor apóia-se em certas passagens em que Hume parece reconhecer que, em ciências morais, predominariam as explicações recorrendo a causas morais, as quais consistiriam nas razões do agente ou conjunto de agentes envolvidos no evento a ser explicado. Defendemos que a diversidade das explicações causais naturais e morais em Hume pode ser discutida, não a partir de uma distinção radical de natureza, como aquela que Livingston quer estabelecer, mas a partir de uma distinção de grau: os graus de certeza que distinguem entre provas e probabilidades, entre explicações pela via dedutiva a partir de leis ou por generalizações estatísticas. Isto é, mais de acordo com a assimetria que Nagel reconhece entre ciências do particular e generalizadoras, quanto ao objetivo de estabelecer leis, no segundo caso, ou de apenas aplicá-las, no primeiro. Uma distinção compatível com aquela que Hume já adotara, atribuindo graus diferentes de generalidade de modo análogo a ciências naturais ou morais.Hume's proposal of a science of man is often taken as a precursor of the now well-known covering-law model of scientific explanation, sustained by Hempel, Nagel and other contemporary philosophers of science. Among Hume's commentators D. Livingston is an exception, defending the existence of two models of explanation in Hume

  10. CiF-CK: An Architecture for Social NPCs in Commercial Games

    NARCIS (Netherlands)

    Guimaraes, Manuel; Santos, Pedro A.; Jhala, Arnav

    2018-01-01

    We present and describe CiF-CK — a social agent architecture that models reasoning about persistent social interactions to improve narrative engagement and play experience for human interactors. The architecture is inspired by McCoy et al’s Comme il-Faut (CiF) architecture that represented

  11. Nursing domain of CI governance: recommendations for health IT adoption and optimization.

    Science.gov (United States)

    Collins, Sarah A; Alexander, Dana; Moss, Jacqueline

    2015-05-01

    There is a lack of recommended models for clinical informatics (CI) governance that can facilitate successful health information technology implementation. To understand existing CI governance structures and provide a model with recommended roles, partnerships, and councils based on perspectives of nursing informatics leaders. We conducted a cross-sectional study through administering a survey via telephone to facilitate semistructured interviews from June 2012 through November 2012. We interviewed 12 nursing informatics leaders, across the United States, currently serving in executive- or director-level CI roles at integrated health care systems that have pioneered electronic health records implementation projects. We found the following 4 themes emerge: (1) Interprofessional partnerships are essential. (2) Critical role-based levels of practice and competencies need to be defined. (3) Integration into existing clinical infrastructure facilitates success. (4) CI governance is an evolving process. We described specific lessons learned and a model of CI governance with recommended roles, partnerships, and councils from the perspective of nursing informatics leaders. Applied CI work is highly interprofessional with patient safety implications that heighten the need for best practice models for governance structures, adequate resource allocation, and role-based competencies. Overall, there is a notable lack of a centralized CI group comprised of formally trained informaticians to provide expertise and promote adherence to informatics principles within EHR implementation governance structures. Our model of the nursing domain of CI governance with recommended roles, partnerships, and councils provides a starting point that should be further explored and validated. Not only can the model be used to understand, shape, and standardize roles, competencies, and structures within CI practice for nursing, it can be used within other clinical domains and by other informaticians

  12. Nowe zasady działalności firm audytorskich

    Directory of Open Access Journals (Sweden)

    Kazimierz Sawicki

    2009-03-01

    Full Text Available W artykule przedstawiono zmiany, stanowiące implementację Dyrektywy 2006/43/WE Unii Europejskiej w części dotyczącej funkcjonowania firm audytorskich w Polsce. Zgłoszono uwagi popierające nowe rozwiązania, jak też zawierające wątpliwości dotyczące skuteczności ich stosowania w praktyce.

  13. Relações entre ciência, tecnologia e sociedade em museus de ciências

    OpenAIRE

    Djana Contier

    2009-01-01

    Este trabalho analisa como museus de ciências no Brasil exploram as relações e as interferências mútuas entre ciência, tecnologia e sociedade, utilizando como principais referenciais a educação com enfoque ciência, tecnologia e sociedade (CTS), e a comunicação pública da ciência. A escolha da educação com enfoque CTS está relacionada à discussão sobre a importância da formação de cidadãos críticos diante das questões de ciência e tecnologia (C&T), incluindo a abordagem ciência, tecnologia, so...

  14. Role of apolipoprotein CI in lipid metabolism and bacterial sepsis

    NARCIS (Netherlands)

    Berbée, Jimmy Fransiscus Paulus

    2007-01-01

    The research described in this thesis focussed on the role of apolipoproteins in lipid metabolism, inflammation and bacterial sepsis, with specific emphasis on apoCI. From studies in human APOC1¬-transgenic and apoc1-/- mice, we were able to identify apoCI as a potent inhibitor of triglyceride

  15. Teoria wielości rzeczywistości Leona Chwistka. Rys krytyczny

    Directory of Open Access Journals (Sweden)

    Hubert Bożek

    2014-12-01

    Full Text Available The purpose of this paper is to offer a logico‑philosophical critical overview of the theory of multiple realities (TWR. The paper is divided into three sections. In the first section I present a brief history of the development of some ideas, which combined together form the conceptual framework of the theory in question, whose main thesis is that there is more than one reality. In the second part I present (and try to address some interpretations of TWR, which can be described as: ontological; epistemological; esthetical; logical ad mixed interpretations. When doing so, a special emphasis is laid on the presentation of an explication of TWR based on theory of models, an explication authored by Teresa Kostyrko. This explication rests on a conditional recognition of the particular ‘realities’ of Chwistek’s theory as proper models (i.e. those, which fulfill the condition of the identity of meaning of theory’s fundamental notions of the theories of reality, with the provision that such models are indeed constructible. In the last section of my paper I propose a preliminary appraisal of the TWR as well as a way to reengineer this theory in order to avoid some of its difficulties. By appealing to Kostyrko’s idea on one hand and the spirit Quinean ontological relativism on the other, I wish to argue as follows: (1 ‘reality’ is the name of the set comprising all meanings of the term ‘reality’; (2 under particular conditions these meanings can be arranged in a theory, which possesses a proper model (scientific discourse, some forms of the common talk; (3 model proper designate by definition classes of objects, which we regard as existent on the grounds of a given theory. The above set of theses forms the core of a concept, which I propose to call the ‘manifold reality’ in order to differentiate it from TWR, the development of which theory it is, as well as its modification towards a new kind of ontology.

  16. Characteristics and determinants of music appreciation in adult CI users.

    Science.gov (United States)

    Philips, Birgit; Vinck, Bart; De Vel, Eddy; Maes, Leen; D'Haenens, Wendy; Keppler, Hannah; Dhooge, Ingeborg

    2012-03-01

    The main objective of this study was to assess the associations between self-reported listening habits and perception of music and speech perception outcomes in quiet and noise for both unilateral cochlear implant (CI) users and bimodal (CI in one ear, hearing aid in contra-lateral ear) users. Information concerning music appreciation was gathered by means of a newly developed questionnaire. Moreover, audiological data (pure-tone audiometry, speech tests in noise and quiet) were gathered and the relationship between speech perception and music appreciation is studied. Bimodal users enjoy listening to music more in comparison with unilateral CI users. Also, music training within rehabilitation is still uncommon, while CI recipients believe that music training might be helpful to maximize their potential with current CI technology. Music training should not be exclusively reserved for the good speech performers. Therefore, a music training program (MTP) that consists of different difficulty levels should be developed. Hopefully, early implementation of MTP in rehabilitation programs can enable adult CI users to enjoy and appreciate music and to maximize their potential with commercially available technology. Furthermore, because bimodal users consider the bimodal stimulation to be the most enjoyable way to listen to music, CI users with residual hearing in the contra-lateral ear should be encouraged to continue wearing their hearing aid in that ear.

  17.  Dylematy harmonizacji rachunkowości

    Directory of Open Access Journals (Sweden)

    Jerzy Gierusz

    2015-06-01

    Full Text Available Harmonizacja rachunkowości finansowej jest procesem przynoszącym wiele korzyści, ale także generującym poważne zagrożenia. Wśród pozytywnych stron harmonizacji wymienić należy: wzmocnienie funkcji alokacyjnej rynków kapitałowych, wzrost zaufania inwestorów do sprawozdań finansowych, rozszerzenie możliwości pozyskiwania kapitału pożyczkowego, obniżenie kosztów funkcjonowania korporacji międzynarodowych. Towarzyszące harmonizacji zjawiska niepożądane to: wyeliminowanie porównywalności sprawozdań finansowych na poziomie krajowym, przekreślenie znacznej części dorobku szkoły kontynentalnej rachunkowości, ustanowienie monopolu w tworzeniu standardów, zanik normatywnego nurtu badań w rachunkowości.

  18. Ciência e humanismo : a visão da ciência de Erwin Schröedinger

    OpenAIRE

    Fiolhais, Carlos

    2015-01-01

    "Erwin Schrödinger, o físico austríaco, que foi um dos principais autores da física quântica, realizou em 1950 uma série de conferências intituladas Ciência e humanismo, que estão traduzidas em português. Analisamos aqui a sua visão da ciência como parte do esforço do ser humano em conhecer-se. Debatemos a sua perspectiva da unidade das ciências, a relação entre ciência e técnica, as raízes profundas do pensamento científico na Antiguidade Grega e, além disso, a interacção da ciência com a fi...

  19. A modified CAS-CI approach for an efficient calculation of magnetic exchange coupling constants

    Science.gov (United States)

    Fink, Karin; Staemmler, Volker

    2013-09-01

    A modification of the conventional wavefunction-based CAS-CI method for the calculation of magnetic exchange coupling constants J in small molecules and transition metal complexes is presented. In general, CAS-CI approaches yield much too small values for J since the energies of the important charge transfer configurations are calculated with the ground state orbitals and are therefore much too high. In the present approach we improve these energies by accounting for the relaxation of the orbitals in the charge transfer configurations. The necessary relaxation energies R can be obtained in separate calculations using mononuclear or binuclear model systems. The method is applied to a few examples, small molecules, binuclear transition metal complexes, and bulk NiO. It allows to obtaining fairly reliable estimates for J at costs that are not higher than those of conventional CAS-CI calculations. Therefore, extended and very time-consuming perturbation theory (PT2), configuration interaction (CI), or coupled cluster (CC) schemes on top of the CAS-CI calculation can be avoided and the modified CAS-CI (MCAS-CI) approach can be applied to rather large systems.

  20. 40 CFR 60.4202 - What emission standards must I meet for emergency engines if I am a stationary CI internal...

    Science.gov (United States)

    2010-07-01

    ... emergency engines if I am a stationary CI internal combustion engine manufacturer? 60.4202 Section 60.4202... emergency engines if I am a stationary CI internal combustion engine manufacturer? (a) Stationary CI...) Stationary CI internal combustion engine manufacturers must certify their 2007 model year and later emergency...

  1. Wrap it in rap! - Music Making with Adolescent CI Users

    DEFF Research Database (Denmark)

    Petersen, Bjørn; Sørensen, Stine Derdau; Pedersen, Ellen Raben

    2015-01-01

    The purpose of this study was to examine 1) the potential effects of an intensive musical ear training program on the perception of music and speech in prelingually hearing impaired adolescent cochlear implant (CI) users and 2) these adolescents’ music engagement. Eleven adolescent CI users...... participated in a short intensive training program involving group-based music making activities (e.g. rapping and singing) and self-administered computer based listening exercises. Testing of music and speech discrimination was carried out before and after the program for the CI users and in two sessions...... equally separated in time for a group of normal-hearing (NH) controls. In addition, the participants reported on their music listening habits and enjoyment. CI users significantly improved their overall music perception and improved their discrimination of melodic contour and rhythm in particular. The NH...

  2. Para quê serve a ciência?

    OpenAIRE

    Novelli, Pedro Geraldo Aparecido [UNESP

    2010-01-01

    A ciência é uma forma de conhecimento e é também uma forma do conhecimento. Contudo, a ciência parece se apresentar como a forma de conhecer e do conhecer. Essa postura faz com que a ciência se afirme no mundo como algo singular obtendo inclusive força de instituição com reconhecimento oficial e sustentação em instâncias informais. A ciência sobreviveu a uma história de perseguição, rejeição e condenação colocando-se nos tempos modernos como o referencial por excelência para o estabelecimento...

  3. Zależność bodźcowości ciśnienia od cyrkulacji atmosferycznej w Warszawie

    Directory of Open Access Journals (Sweden)

    Katarzyna Rozbicka

    2016-09-01

    Full Text Available W pracy zbadano: czasowy rozkład ciśnienia atmosferycznego, bodźcowe oddziaływanie ciśnienia atmosferycznego o wartościach wyższych od 1015 hPa lub niższych od 985 hPa. Wyznaczono częstość i prawdopodobieństwo wystąpienia ciśnienia o oddziaływaniu bodźcowym oraz zanalizowano zależność zmian międzydobowych ciśnienia od typów cyrkulacji atmosferycznej według klasyfikacji Lityńskiego. Do obliczeń wykorzystano cogodzinne wartości ciśnienia atmosferycznego pochodzące ze stacji Ursynów SGGW z okresu 2011–2015. Na podstawie badań stwierdzono, że ciśnienie atmosferyczne o oddziaływaniu bodźcowym w Warszawie może wystąpić w każdym miesiącu z prawdopodobieństwem od 0,2% do 19,1%, w przypadku ciśnienia o wartościach wyższych niż 1015 hPa oraz od 0,1 do 3,4%, w przypadku ciśnienia niższego od 985 hPa, z wyjątkiem czerwca i sierpnia. Zmiany międzydobowe ciśnienia atmosferycznego mogą osiągać około 24 hPa, a częstość występowania bodźców „silnych” wywołanych tymi zmianami wyniosła w poszczególnych miesiącach od 1% do 16%, natomiast bodźców „bardzo silnych” od 2% do 8%. Spośród sytuacji synoptycznych największe znaczenie dla bodźcowości zmian ciśnienia mają sytuacje cyklonalne: szczególnie przy adwekcji powietrza z sektora północno-zachodniego (NWC.

  4. A busca de um novo modelo de gestão para a ciência, tecnologia e inovação na política do MCT (1995-2002 A new management model for science, technology and innovation in the Department of Science and Technology policy (1995-2002

    Directory of Open Access Journals (Sweden)

    Alexandre Veronese

    2006-02-01

    Full Text Available Este artigo mostra como a agenda da reforma administrativa de 1995 foi incorporada aos objetivos traçados pela política científica do Ministério da Ciência e Tecnologia (MCT nos dois governos passados (1995-2002. A área de ciência e tecnologia, no Brasil e no mundo, tem passado por dramáticas mudanças. Um desses tipos de mudança se refere às pressões para o estabelecimento de uma nova forma de gerir o processo científico e tecnológico. Este artigo começa com uma análise do estágio de desenvolvimento do setor de ciência e tecnologia brasileiro e seus impasses. A seguir, faz uma exposição sobre a reforma do Estado nas décadas de 1980 e 1990 e a reforma administrativa de 1995. Depois, trata da agenda da política de C&T, com ênfase na busca de novos formatos institucionais. Conclui que, ao mesmo tempo que o setor está burocratizado, a sociedade brasileira também segue o percurso de sua burocratização. E, assim, mostra que, por esse processo de burocratização da sociedade não ter sido identificado no traçado das políticas setoriais do MCT, o ministério apostou numa proposta de desregulamentação que, provavelmente, não dará conta da necessidade de novos formatos na política de gestão para as suas unidades de pesquisa.This article shows how the agenda of the 1995 administrative reform was incorporated into the policy goals of the Department of Science and Technology during its two last terms (1995-2002. The area of science and technology (S&T in Brazil and abroad has gone through dramatic changes. One of these changes refers to the pressures for a new form of managing the S&T process. This article begins by analyzing the stage of development of S&T in Brazil and its roadblocks. It then discusses the State reform of the 1980's and 90's and the 1995 administrative reform, as well as the S&T policy agenda, emphasizing the search for new institutional models. It concludes that both the sector and the Brazilian society

  5. Empiryczna weryfikacja hipotezy o przenośności modelu Altmana na warunki polskiej gospodarki oraz uniwersalności sektorowej modeli

    Directory of Open Access Journals (Sweden)

    Tomasz Iwanowicz

    2018-03-01

    Full Text Available Celem artykułu jest próba udzielenia odpowiedzi na pytanie, czy istnieje uzasadnienie dla mechanicznego przenoszenia modelu Altmana na warunki polskiej gospodarki oraz sprawdzenie, czy wśród testowanych modeli istnieje model wykazujący dla każdego typu przedsiębiorstwa (przemysłowe, handlowe, usługo- we najwyższą skuteczność i najlepsze wartości zastosowanych metod porównawczych. W artykule porównano trzynaście testowanych modeli używając macierzy klasyfikacji, ilorazu szans, krzywej kon- centracji CAP i wskaźnika dokładności Giniego, będących metodami oceny sprawności, oraz wskaźnika Briera będącego metodą oceny modeli z punktu widzenia kryterium kalibracji. Badania zostały przepro- wadzone na bazie 439 sprawozdań finansowych opublikowanych przez 139 spółek kapitałowych zarejestrowanych w warszawskich sądach okręgowych i rejonowych (w tym 79 spółek, które w rzeczywistości ogłosiły upadłość. Przeprowadzone badania obaliły mit o przenośności modelu Altmana na warunki polskiej gospodarki oraz uniwersalności sektorowej modeli. Wykazano, że sprawność modeli różni się dla spółek produkcyjnych, handlowych i usługowych oraz określono te sprawności. Ponadto udowodniono, że istnieją modele dyskryminacyjne różniące się zestawem zmiennych oraz współczynnikami wagowymi, które wykazują zbliżone skuteczności predykcyjne. The purpose of this paper is to answer the question about the validity of mechanical transfer of the Alt- man model to Polish economy and to check if among the tested models there is a model with the highest efficiency and best outcomes for the used comparative methods for each type of enterprise (manufactur- ing, trading, service. Thirteen tested models were compared using the classification matrix, odds ratio, CAP concentration curve and Gini accuracy index, which are efficiency evaluation methods, as well as using the Brier index, which is a method of evaluating models

  6. Implications of CI therapy for Visual Deficit Training

    Directory of Open Access Journals (Sweden)

    Edward eTaub

    2014-10-01

    Full Text Available We address here the question of whether the techniques of CI therapy, a family of treatments that has been employed in the rehabilitation of movement and language after brain damage might apply to the rehabilitation of such visual deficits as unilateral spatial neglect and visual field deficits. CI therapy has been used successfully for the upper and lower extremities after chronic stroke, cerebral palsy (CP, multiple sclerosis (MS, other CNS degenerative conditions, resection of motor areas of the brain, focal hand dystonia, and aphasia. Treatments making use of similar methods have proven efficacious for amblyopia.The CI therapy approach consists of four major components: intensive training, training by shaping, a transfer package to facilitate the transfer of gains from the treatment setting to everyday activities, and strong discouragement of compensatory strategies.CI therapy is said to be effective because it overcomes learned nonuse, a learned inhibition of movement that follows injury to the CNS. In addition, CI therapy produces substantial increases in the grey matter of motor areas on both sides of the brain. We propose here that these mechanisms are examples of more general processes: learned nonuse being considered parallel to sensory nonuse following damage to sensory areas of the brain, with both having in common diminished neural connections (DNC in the nervous system as an underlying mechanism. CI therapy would achieve its therapeutic effect by strengthening the diminished neural connections. Use-dependent cortical reorganization is considered to be an example of the more general neuroplastic mechanism of brain structure repurposing (BSR. If the mechanisms involved in these broader categories are involved in each of the deficits being considered, then it may be the principles underlying efficacious treatment in each case may be similar. The lessons learned during CI therapy research might then prove useful for the treatment of

  7. Cinema, ciência e percepção.

    Directory of Open Access Journals (Sweden)

    Márcio Barreto

    Full Text Available Resumo O cinema invoca a questão dos limites da percepção humana, pois modula o tempo em imagens tão reais quanto artificiais, revelando algo mais próximo de uma nova dimensão da realidade do que de sua representação. No início do século XX, a ciência modifica o real percebido através das lentes dos microscópios e das teorias da física moderna; o parentesco entre cinema e ciência está principalmente naquilo que excede o campo perceptivo e é explorado neste artigo para mostrar como a tensão entre o caráter estático da fotografia e a fluidez fugitiva do tempo revela a ciência sem seus estereótipos habituais.

  8. Em torno do conceito de ciência

    OpenAIRE

    Fonseca, Maria de Jesus

    1996-01-01

    A comunicação que ora se apresenta surge no âmbito da iniciativa "VIVA A CIÊNCIA" - 1994, promovida pela Secretaria de Estado da Ciência e Tecnologia e já em 2º edição. São objectivos deste projecto a divulgação da ciência e da tecnologia tornando "visível a importância da ciência e da tecnologia numa sociedade que já se habituou aos seus benefícios, mas que ainda teme e se interroga sobre os seus efeitos futuros."1 Nesse sentido, pretende-se que esta semana constitua, a nível nacional, u...

  9. Using the Web for Competitive Intelligence (CI) Gathering

    Science.gov (United States)

    Rocker, JoAnne; Roncaglia, George

    2002-01-01

    Businesses use the Internet as a way to communicate company information as a way of engaging their customers. As the use of the Web for business transactions and advertising grows, so too, does the amount of useful information for practitioners of competitive intelligence (CI). CI is the legal and ethical practice of information gathering about competitors and the marketplace. Information sources like company webpages, online newspapers and news organizations, electronic journal articles and reports, and Internet search engines allow CI practitioners analyze company strengths and weaknesses for their customers. More company and marketplace information than ever is available on the Internet and a lot of it is free. Companies should view the Web not only as a business tool but also as a source of competitive intelligence. In a highly competitive marketplace can any organization afford to ignore information about the other players and customers in that same marketplace?

  10. A ideia de ciência em Karl Marx

    Directory of Open Access Journals (Sweden)

    Ricardo Luís Chaves Feijó

    2015-12-01

    ideias: a economia política clássica e o legado alemão. Em seguida, investiga-se o que seria a sua concepção particular de ciência, entendida como uma proposta de fundir esses dois legados. Avalia-se, em seguida, o caráter científico da contribuição marxiana, entendida como o fazer de uma ciência que se propõe positiva. Destarte, iremos examinar as razões que separam a tradição marxiana e o mainstream da economia atual, mostrando que a natureza peculiar de uma ciência de raízes alemãs gera dificuldades na comunicação entre uma e outra.

  11. [Inpatient rehabilitation of adult CI users: Results in dependency of duration of deafness, CI experience and age].

    Science.gov (United States)

    Zeh, R; Baumann, U

    2015-08-01

    Cochlear implants (CI) have proven to be a highly effective treatment for severe hearing loss or deafness. Inpatient rehabilitation therapy is frequently discussed as a means to increase the speech perception abilities achieved by CI. However, thus far there exists no quantitative evaluation of the effect of these therapies. A retrospective analysis of audiometric data obtained from 1355 CI users compared standardized and qualitative speech intelligibility tests conducted at two time points (admission to and discharge from inpatient hearing therapy, duration 3-5 weeks). The test battery comprised examination of vowel/consonant identification, the Freiburg numbers and monosyllabic test (65 and 80 dB sound pressure level, SPL, free-field sound level), the Hochmair-Schulz-Moser (HSM) sentence test in quiet and in noise (65 dB SPL speech level; 15 dB signal-to-noise ratio, SNR), and a speech tracking test with and without lip-reading. An average increase of 20 percentage points was scored at discharge compared to the admission tests. Patients of all ages and duration of deafness demonstrated the same amount of benefit from the rehabilitation treatment. After completion of inpatient rehabilitation treatment, patients with short duration of CI experience (below 4 months) achieved test scores comparable to experienced long-term users. The demonstrated benefit of the treatment was independent of age and duration of deafness or CI experience. The rehabilitative training program significantly improved hearing abilities and speech perception in CI users, thus promoting their professional and social inclusion. The present results support the efficacy of inpatient rehabilitation for CI recipients. Integration of this or similar therapeutic concepts in the German catalog of follow-up treatment measures appears justified.

  12. Nauczanie sprawności komunikacyjnych w grupach ekonomicznych

    OpenAIRE

    Wielkiewicz-Jałmużna, Dorota

    2013-01-01

    Celem nauczania języka polskiego w grupach ekonomicznych jest przede wszystkim rozwijanie kompetencji uczących się. Kluczowe znaczenie mają umiejętności receptywne czyli rozumienie ze słuchu i czytanie. Istotne znaczenie ma również nauczanie sprawności produktywnych to jest mówienia i pisania. Kolejnymi sprawnościami językowymi, które uczniowie zdobywają pod nadzorem nauczyciela są: umiejętność interakcji i mediacji.

  13. BADANIE OSŁONNOŚCI RADIACYJNEJ BETONÓW SPECJALNYCH

    Directory of Open Access Journals (Sweden)

    Agnieszka BURAKOWSKA

    2016-07-01

    Full Text Available W artykule przedstawiono wyniki badań właściwości osłonnych betonów eksperymentalnych przed promieniowaniem gamma, z wykorzystaniem zamkniętego źródła promieniotwórczego 137Cs. Do analiz sporządzono i opisano specjalne stanowisko badawcze o określonej geometrii. Do badań wykorzystano odpowiednio przygotowane próbki betonów ciężkich o zróżnicowanym składzie. W ramach prac przebadano piętnaście rodzajów betonów różniących się przede wszystkim zawartością kruszyw oraz gęstością objętościową. Na podstawie uzyskanych danych pomiarowych, dla poszczególnych prób betonów, otrzymano wartości grubości kolejnych warstw połówkowych (HVL i dziesięciochłonnych (TVL. Z przeprowadzonych analiz wynika, iż najlepsze parametry osłonne w polu promieniowania gamma dla izotopu 137Cs mają betony, z których kruszywem magnetytowym oraz barytowym. Betony te miały bardzo wysoką gęstość - powyżej 3300 kg/m3. Gorszymi parametrami charakteryzowały się natomiast mieszanki zawierające w składzie tylko kruszywa zwykłe (serpentynit lub amfibolit, a ich gęstość nie przekraczała 2450 kg/m3. Otrzymane wyniki badań, zgodnie z wcześniejszymi założeniami, wskazują, że wraz ze wzrostem gęstości materiału osłonowego warstwa HVL (odpowiednio TVL zmniejsza się, co oznacza, że właściwości osłonowe materiału przed promieniowaniem gamma ulegają poprawie

  14. CHARAKTERYSTYKA TRWAŁOŚCI ZMĘCZENIOWEJ RECYKLOWANEJ PODBUDOWY

    Directory of Open Access Journals (Sweden)

    Przemysław BUCZYŃSKI

    2016-07-01

    Full Text Available W artykule przedstawiono ocenę trwałości zmęczeniowej recyklowanej podbudowy wykonanej w technologii recyklingu głębokiego na zimno z emulsją asfaltową (MCE. W składzie recyklowanej podbudowy zastosowano trzy spoiwa tj. cement CEM I 32,5R, wapno hydratyzowane Ca(OH2 oraz mieszaninę cementu i wapna hydratyzowanego w proporcjach 50% CEM do 50% Ca(OH2. Udział spoiwa w mieszance recyklowanej podbudowy ustalono na 2,5%. Jako lepiszcze zastosowano kationową emulsję wolnorozpadową C60B10 ZM/R w ilości 3%. W celu określenia jakości recyklowanej podbudowy wykonano podstawowe badanie właściwości fizycznych oraz mechanicznych tj. zawartość wolnej przestrzeni Vm, wytrzymałość na pośrednie rozciąganie ITSDRY, odporność na działanie wody TSR oraz moduł sztywności w pośrednim rozciąganiu Sm w temperaturze 2OC, 10OC oraz 20OC. Ocenę trwałości zmęczeniowej recyklowanej podbudowy określono w teście pośredniego rozciągania (Indirect Tensil – Fatigue Test zgodnie z wymaganiami normy PN-EN 12697-26 zał. E. Badanie przeprowadzono w trybie kontrolowanego naprężenia tj. 250 kPa, 400 kPa oraz 500kPa. Badanie zmęczenia recyklowanej podbudowy pozwoliło określić wpływ rodzaju spoiwa na zmianę trwałości przy cyklicznym obciążeniu oraz zmiennym poziomie naprężenia. W oparciu o założenia planu badań możliwe było wytypowanie, spoiwa które zapewni uzyskanie wymaganej trwałości zmęczeniowej.

  15. Music Perception and Appraisal: Cochlear Implant Users and Simulated CI Listening

    Science.gov (United States)

    Wright, Rose; Uchanski, Rosalie M.

    2012-01-01

    Background The inability to hear music well may contribute to decreased quality of life for cochlear implant (CI) users. Researchers have reported recently on the generally poor ability of CI users’ to perceive music, and a few researchers have reported on the enjoyment of music by CI users. However, the relation between music perception skills and music enjoyment is much less explored. Only one study has attempted to predict CI users’ enjoyment and perception of music from the users’ demographic variables and other perceptual skills (Gfeller et al., 2008). Gfeller’s results yielded different predictive relationships for music perception and music enjoyment, and the relationships were weak, at best. Purpose The first goal of this study is to clarify the nature and relationship between music perception skills and musical enjoyment for CI users, by employing a battery of music tests. The second goal is to determine whether normal hearing (NH) subjects, listening with a CI-simulation, can be used as a model to represent actual CI users for either music enjoyment ratings or music perception tasks. Research Design A prospective, cross-sectional observational study. Original music stimuli (unprocessed) were presented to CI users, and music stimuli processed with CI-simulation software were presented to twenty NH listeners (CIsim). As a control, original music stimuli were also presented to five other NH listeners. All listeners appraised twenty-four musical excerpts, performed music perception tests, and filled out a musical background questionnaire. Music perception tests were the Appreciation of Music in Cochlear Implantees (AMICI), Montreal Battery for Evaluation of Amusia (MBEA), Melodic Contour Identification (MCI), and University of Washington Clinical Assessment of Music Perception (UW-CAMP). Study Sample Twenty-five NH adults (22 – 56 years old), recruited from the local and research communities, participated in the study. Ten adult CI users (46 – 80

  16. Comunidades em processos formativos de professores de ciências

    Directory of Open Access Journals (Sweden)

    Willian Rubira da Silva

    2017-12-01

    Full Text Available Apresentamos compreensões sobre as diferentes concepções de comunidade dentro do contexto da formação de professores de Ciências. Termos relacionados a comunidades no contexto de ensino e aprendizagem vem se tornando genéricos, dificultando compreensões de trabalhos da área no Brasil. Visualizamos a necessidade de significar concepções do termo em questão no contexto da sociologia e psicologia para então avançar nas compreensões mais abrangentes dentro da educação. Ampliamos o estudo com uma revisão dos trabalhos publicados nos anais do Encontro Nacional de Pesquisa em Educação em Ciências correlacionando a formação de professores com as perspectivas teórico-práticas de comunidades em contexto educacional. Escolhemos os anais deste evento por ser um ponto de debate entre os pesquisadores na área de Educação em Ciências e que, desta maneira, nos possibilitou sistematizar diferentes concepções de comunidades. Essas foram agrupadas em 7 categorias emergentes distintas por aspectos teórico-práticos utilizados nos processos formativos de professores de Ciências.

  17. Ceux-ci ne sont pas : [luuletused] / Kalju Kruusa

    Index Scriptorium Estoniae

    Kruusa, Kalju, pseud., 1973-

    2003-01-01

    Sisu: Ceux-ci ne sont pas ; Köögivahet ; "Taara..." ; "Pakane pistab pisikesi ..." ; "Meri on kaet mattklaasiga ; Pydemise päivil ; "Toas muusika mängib ..." ; "Jäin juustu imetlema ; "Mu elu on mustikas ..." ; Hingepidetus ; ŁNo me gusta la cocina

  18. Uwarunkowania skuteczności działania inkubatorów przedsiębiorczości

    OpenAIRE

    Świeszczak, Krzysztof

    2016-01-01

    Skłonność społeczeństwa do prowadzenia własnej działalności gospodarczej odgrywa istotną rolę w rozwoju krajowych gospodarek. Biorąc pod uwagę charakterystykę jednostek należących do sektora MSP, ich potrzeby oraz bariery, niekiedy uniemożliwiające egzystencję na rynku, warto zwrócić uwagę na konieczność kreowania narzędzi wspomagających przedsiębiorczość. Spośród licznych instrumentów wsparcia jednostek z sektora MSP na szczególną uwagę zasługują inkubatory przedsiębiorczości , których dział...

  19. BIOGRAMY POLSKICH MYŚLICIELI RACHUNKOWOŚCI

    Directory of Open Access Journals (Sweden)

    Renata Biadacz

    2009-09-01

    Full Text Available Fragmenty artykułu: Włodzimierz Brzezin (1926–2008, profesor zwyczajny, doktor habilitowany, urodził się 1 lipca 1926 r. w Wieluniu, zmarł 29 grudnia 2008 r. w Częstochowie. (... Bilans działalności i osiągnięć Profesora Brzezina jest bardzo bogaty i trudno go przedstawić w skrócie. Należy jednak zaznaczyć, że jedną z cech charakteryzujących całokształt Jego zainteresowań naukowych jest szeroki krąg tematyczny. Obejmuje zagadnienia teoretyczne i praktyczne rachunkowości, zarówno sensu stricte, jak i sensu largo, jak również problematykę teorii pomiaru, analizy finansowej, controllingu, polityki bilansowej, wykorzystania rachunku kosztów przez kadrę inżynierską. Zdzisław Kołaczyk (1927–2008 docent doktor, urodził się 15 czerwca 1927 r. w Częstochowie, zmarł 9 lipca 2008 r. w Poznaniu. (... Działalność naukowa doc. dr Z. Kołaczyka skupiała się głównie na rachunkowości finansowej. Początkowo Jego zainteresowania naukowe koncentrowały się na rachunku kosztów przedsiębiorstw przemysłowych i budowlanych. Z tego zakresu opublikował kilka interesujących artykułów naukowych, zamieszczonych w Ruchu Prawniczym, Ekonomicznym i Socjologicznym oraz w Zeszytach Naukowych WSE w Poznaniu. W kolejnych latach doc. dra Z. Kołaczyka interesował rozwój rachunkowości jako nauki i działalności praktycznej

  20. Surviving High-temperature Components in CI Chondrites

    Science.gov (United States)

    Zolensky, M.; Frank, D.

    2014-01-01

    The CI1 chondrites, while having the most solar-like compo-sition of any astromaterial available for laboratory analysis, have also been considerably altered by asteroidal processes including aqueous alteration. It is of fundamental importance to determine their pre-alteration mineralogy, so that the state of matter in the early Solar System can be better determined. In the course of a re-examination of the compositional range of olivine and low-Ca pyroxene in CI chondrites Orgueil, Ivuna and Alais [1] we found the first reported complete CAI, as already reported [2], with at-tached rock consisting mainly of olivine and low-Ca pyroxene. The range of residual olivine major element compositions we have determined in the CIs (Fig. 1) may now be directly com-pared with those of other astromaterials, including Wild 2 grains. The abundance of olivine and low-Ca pyroxene in CIs is higher than is generally appreciated, and in fact much higher than for some CMs [1]. We also noted numerous rounded objects varying in shape from spheres to oblate spheroids, and ranging up to 100µm in size (Fig. 2), which have been previously noted [3] but have not been well documented or appreciated. We characterized the mineralogy by transmission electron microscopy and found that they consist mainly of rather fine-grained, flaky single phase to intergrown serpentine and saponite. These two materials in fact dominate the bulk of the host CI1 chondrites. With the exception of sparse spinels, the rounded phyllosilicate objects are remarka-bly free of other minerals, suggesting that the precursor from which the phyllosilicates were derived was a homogeneous mate-rial. We suggest that these round phyllosilicates aggregates in CI1 chondrites were cryptocrystalline to glassy microchondrules. If so then CI chondrites cannot be considered chondrule-free. Small though they are, the abundance of these putative microchondrules is the same as that of chondrules in the Tagish Lake meteorite.

  1. From hearing with a cochlear implant and a contralateral hearing aid (CI/HA) to hearing with two cochlear implants (CI/CI): a within-subject design comparison.

    Science.gov (United States)

    Luntz, Michal; Egra-Dagan, Dana; Attias, Joseph; Yehudai, Noam; Most, Tova; Shpak, Talma

    2014-12-01

    To compare within-subject bilateral-binaural and bimodal complementary abilities between bimodal (cochlear implant and hearing aid; CI/HA) and bilateral CI hearing (CI/CI), thereby enabling better-informed counseling of experienced CI/HA users contemplating contralateral implantation. Comparative within-subject case review. Outpatient hearing clinic. Ten experienced adult CI/HA users with severe-to-profound hearing loss in the HA ear, who converted to CI/CI between 2 and 11 years after initial implantation. Task-specific testing of bilateral-binaural hearing (sound lateralization, binaural summation/redundancy/unmasking, head-shadow effect), bimodal complementary benefit (contribution of low-frequency information), and a self-report Speech, Spatial, and Qualities of Hearing (SSQ) questionnaire, all before and 1 year after contralateral cochlear implantation. Test result differences between CI/HA and CI/CI conditions. CI/CI hearing was better than CI/HA for speech lateralization and for perception of semantically unpredictable sentences in speech noise with speech at 0 degrees and noise at +90 degrees azimuth on the old CI side. CI/HA was better than CI/CI only for differences between perception of natural prosody speech and of speech with flattened fundamental frequency (F0) contour with speech and noise in front (at 0 degrees azimuth). Total scores on the SSQ questionnaire were higher in CI/CI than in CI/HA users. Counseling regarding contralateral implantation for CI/HA users with severe-to-profound hearing loss in the HA ear, though generally positive, should consider individual functional needs, and cover expectations about the expected trade-off between gaining improved understanding and speech lateralization in challenging listening conditions and losing some low-frequency cues still available with CI/HA hearing.

  2. Perspektywy rozwojurachunkowości międzynarodowej

    Directory of Open Access Journals (Sweden)

    Stanisława T. Surdykowska

    2010-05-01

    Full Text Available Jednym z najbardziej niepokojących zjawisk, obserwowanych w procesie przygo-towywania sprawozdań finansowych, jest stale rosnąca tendencja do posługiwania się wąsko zdefiniowanymi regułami tego pomiaru, niekoniecznie uwzględniającymi istotę mierzonych kategorii. Organy ustalające standardy podejmują próby związane ze spełnieniem tych oczekiwań, lecz nie ma i nigdy nie będzie możliwości ustalania tak szczegółowych reguł, które mogłyby zostać wykorzystane w każdym pojedyn-czym elemencie pomiaru, o którym mowa. Ponadto istnieje wiele przykładów, które potwierdzają, że bardziej szczegółowe reguły, w porównaniu do raczej ogólnej zasady dotyczącej tego samego przedmiotu pomiaru, nie wyeliminowały, a nawet nie zmniej-szyły możliwości zarówno nieświadomych, jak i celowych/przestępczych zniekształ-ceń tego pomiaru. Wynika z tego konieczność krytycznego spojrzenia na standardy, które niezależnie od ich szczegółowości, tworzą iluzję precyzji w pomiarze dokonywanym w rachun-kowości, podczas gdy w swojej istocie pomiar ten jest zdeterminowany przez su-biektywne wybory osób w nim uczestniczących. W tym kontekście pojawia się py-tanie, czy aby te szczegółowe reguły pomiaru nie zwiększyły skłonności do nadużyć, zamiast je ograniczać. Pytania te są stawiane szczególnie często w przypadku po-jawiających się z coraz większą częstotliwością kryzysów finansowych. Jednocześnie IASB będąc w przyszłości globalną instytucją ustalającą standar-dy zakłada, że modyfikowane i ustalane przez nią standardy będą interpretowane zgodnie z „duchem”, a nie, jak dotychczas – zgodnie z „literą prawa”. Przedmiotem rozważań zawartych w referacie są sprzeczności i dylematy związane z takim sta-nowiskiem IASB.

  3. Perspectivas Interdisciplinaridades e Linguagem nas Ciências Humanas

    Directory of Open Access Journals (Sweden)

    Alzira Lobo de Arruda Campos

    2015-01-01

    Full Text Available As ciências humanas discutiram a questão da interdisciplinaridade ao longo do século XX. Mas, já no século anterior, figuras notáveis, como Wilhelm Dilthey e Karl Marx, questionavam-se sobre os paradigmas monistas da explicação e da compreensão. Interrogação reproduzida, entre muitos, por Sigmund Freud, Max Weber, Claude Lévi-Strauss, Fernand Braudel, Michel Serres. Em Educação, o grupo de Doutorado em Ciências da Educação, de Paris VIII, há 30 anos adotou a multirreferencialidade como metodologia hegemônica.

  4. Preparation of 1 Ci of europium 155 without carrier

    International Nuclear Information System (INIS)

    Falconi, N.; Radicella, R.

    1968-01-01

    High activity 'point' sources of 155 Eu are used for medical and industrial applications. For this purpose we have studied a method of obtaining I Ci of carrier free 155 Eu, with a solid residue smaller than 5 mg per Ci. In order to separate the 155 Eu from several grams of a 154 Sm enriched target we propose a procedure which is based on the work of Bouissieres and David, Onstott, and Takekoshi et al. The separation is carried out by electrolysis on a mercury cathode followed by purification on ion exchange resin. The yields of the europium separation and target recovery are 80 per cent and 90 per cent respectively. The time required for the procedure is three days. (authors) [fr

  5. O lazer como objeto das ciências humanas

    OpenAIRE

    de Almeida, Marco Antonio Bettine; Gutierrez, Gustavo Luis

    2008-01-01

    Resumo: Este artigo estudará o lazer moderno como objeto das ciências humanas, discutindo a influência do capitalismo na sua gênese e a necessidade de uma consciência coletiva do tempo livre para a sua formação. O discurso lógico científico Popperiano foi utilizado para dar unidade nas diferentes leituras e possibilitar o conflito, através da seguinte ferramenta metodológica, a constante construção interpretativa da ciência do objeto. Através destes parâmetros foi-nos possível analisar a impo...

  6. Structural Biology of CI from Phage TP901-1

    DEFF Research Database (Denmark)

    Rasmussen, Kim Krighaar

    ), three Operator sites, Right, Left and Distance (OR, OL and OD) and two Promoters, Right and Left (PR and PL). The CI repressor is generally the major regulator of temperate bacteriophages genetic switches. In general CI repressors consist of two domains, the N-Terminal Domain (NTD) and C-Terminal Domain......Viruses constitute the most abundant genetic pool on earth and are divided into several orders. One orders is the bacteriophages. A common characteristic of this order is the ability to infect bacteria. The order is further divided into families, subfamilies, genuses and species. Some species...... the interaction with DNA by crystallography and NMR. The binding are found to be similar to previously found pattern of HTH motifs DNA binding supporting the assumption that NTD is a HTH motif. The HTH motif itself revealed an extended scaffold helix, which we hypothesize might be an interaction site...

  7. Combustion and Performance Characteristics of CI Engine Running with Biodiesel

    OpenAIRE

    Tesfa, Belachew; Mishra, Rakesh; Gu, Fengshou; Ball, Andrew

    2013-01-01

    Biodiesel is one of the alternative fuels which is renewable and environmentally friendly and can be used in diesel engines with little or no modifications. In the present study, experimental investigations were carried out on the effects of biodiesel types, biodiesel fraction and physical properties on the combustion and performance characteristics of a compression ignition (CI) engine. The experimental work was conducted on a four-cylinder, four -stroke, direct injection (DI) and turbocharg...

  8. Ciência e modernidade: a perspectiva dos movimentos sociais

    Directory of Open Access Journals (Sweden)

    Paulo Bassani

    2004-12-01

    Full Text Available Pensar alguns elementos que fazem parte da dinâmica e dos processos existentes nos movimentos sociais dos anos 90 é um dos objetivos centrais do trabalho. A valorização dos componentes micro sociais, subjetivos e do senso comum, coloca às Ciências Sociais, um desafio instigante, de aproximar a reflexão teórica com o que ocorre no plano do cotidiano.

  9. Unit test automation with Jenkins-CI tool

    OpenAIRE

    Ahmed, Anastasia

    2015-01-01

    Continuous Integration (CI) the process that is performing tasks continuously itself. Software development and its testing started a new era, which allows making the process productive and faster. It has been one of the fast growing industries in many parts of businesses. By the years devel-opment techniques has been improving and produced a quality product to the client in a shorter period. The competition raised, but expense of the production got smaller. Automation testing is a tes...

  10. O Jornal Nacional e a Ciência

    Directory of Open Access Journals (Sweden)

    Diego Andres Salcedo

    2009-10-01

    Full Text Available Entendendo a informação científica como aquela capaz de contribuir para o desenvolvimento de uma cultura científica, analisamos neste trabalho aspectos relacionados à presença da informação sobre ciência no Jornal Nacional (JN, da Rede Globo de Televisão. A partir da observação do noticiário veiculado de 1º de janeiro a 31 de março de 2007, foi possível identificar 88 matérias que traziam informações relacionadas à ciência. O corpus nos permitiu categorizar os tipos de inserção da ciência no JN, esboçar o interesse do JN pelos temas científicos e discutir seu papel na formação de uma cultura científica do povo brasileiro.

  11. Skinner: sobre ciência e comportamento humano

    Directory of Open Access Journals (Sweden)

    Angelo Augusto Silva Sampaio

    Full Text Available Atualmente, não se pode pensar no estudo do comportamento humano sem considerar a abordagem científica a este objeto: o campo da Psicologia científica. Esse campo é disputado por diversos enfoques teóricos que divergem quanto ao modo como definem ciência e comportamento humano. A abordagem de B. F. Skinner foi bastante proeminente no século XX, mas ainda continua a ser mal-entendida. Partindo do desenvolvimento histórico de sua obra, o presente texto visa a iluminar alguns aspectos relacionados às noções de ciência e comportamento humano desse autor e ressaltar as transformações por que passaram. Analisam-se três tópicos da obra de Skinner: seu período inicial (de 1930 a cerca de 1938, a obra "Ciência e Comportamento Humano" de 1953, e as influências da Biologia. São enfatizados aspectos relevantes da sua teorização sobre o tema: busca por relações funcionais, ênfase nos dados empíricos, operacionismo, externalismo, multideterminação do comportamento, experimentalismo, previsão e controle, ética.

  12. Modeling with FCA-Based Model of Microstructure Evolution of MgCa08 Alloy During Drawing of Thin Wire in Heated Die / Modelowanie Za Pomocą FCA Rozwoju Mikrostruktury Stopu MgCa08 Podczas Ciągnienia Cienkiego Drutu W Podgrzewanym Ciagadle

    Directory of Open Access Journals (Sweden)

    Svyetlichnyy D. S.

    2015-12-01

    Full Text Available The paper deals with a modeling of manufacturing process of thin wire of MgCa08 alloy used as biocompatible soluble threads for medical application. Some difficulties in material deformation subjected with its hexagonal structure can be solved with accurate establishment of the deformation conditions, especially temperature history of the whole process. In drawing process with heated die, wire is preheated in furnace and then deformed. The only narrow temperature range allows for multi-pass drawing without wire breaking. Diameter below 0.1 mm required for the final product makes very important the consideration of microstructure evolution because grain size is comparable with the wire dimensions. For this reason the problem is considered in the micro scale by using the frontal cellular automata (FCA-based model. The goals of present work are the development and validation of FCA-base model of microstructure evolution of MgCa0.8 magnesium alloy. To reach this objective, plastometric and relaxation tests of MgCA08 alloy were done on physical simulator GLEEBLE 3800. Results of the experimental studies were used for parameters identification of the hardening-softening model of the material. Then, initial microstructure and its evolution during the drawing passes were simulated with FCA-based model. FCA consider dislocation density and flow stress, hardening and softening including recovery and recrystallization, grain refinement and grain rotation, as well as grain growth. It allows one to obtain structures close to real ones. Two variants of the drawing process with different temperature history were considered. The deformation scheme was the same. Simulation results with following short discussion confirm usefulness of FCA-based model for explanation and selection of rational technological condition of thin wire drawing of MgCa08 alloy.

  13. SISTEM PENJUALAN SPARE PART TOKO AJM MOTOR MENGGUNAKAN CI BERBASIS ARSITEKTUR MVC

    Directory of Open Access Journals (Sweden)

    Ade Setiadi

    2016-11-01

    Full Text Available Saat ini penggunaan komputer dan perangkat lunak semakin banyak hingga ke berbagai kehidupan, bahkan sampai pada bidang ekonomi. Sistem Informasi merupakan peranan sangat penting dalam kegiatan bisnis di suatu perusahaan. Toko AJM Motor bergerak dalam bidang penjualan spare part mobil dan masih menggunakan cara yang konvensional dalam mengolah data tentang transaksi penjualan, untuk itu Toko AJM Motor membutuhkan sistem informasi yang dapat menunjang kelancaran dalam melakukan transaksi penjualannya. Dalam dunia teknologi khususnya pemrograman saat ini, baik itu desktop maupun web base semakin marak pengerjaannya menggunakan framework dan salah satu framework berbasis PHP yang banyak digunakan yaitu CodeIgniter (CI. Framework CI memang dikembangkan untuk memudahkan dalam developing aplikasi dengan struktur file source code-nya menggunakan pendekatan arsitektur Models-Views-Controller (MVC dan pemrograman berorientasi objek. Oleh sebab itu, kami menggunakan CI dalam developing aplikasi ini dengan metode Object Oriented Analysis and Design sebagai metode pengembangan system. Dengan dirancangnya sistem ini telah mempermudah pemilik toko dalam mengelola data pelanggan, supplier dan barang yang di beli dan di jual serta pembuatan laporan yang diperlukan untuk perhitungan penjualan dan dapat memberikan informasi yang berguna bagi pemilik toko secara up to date. Kata kunci: codeigniter (CI, models-views-controller (MVC, object oriented, penjualan.

  14. BIOGRAMY POLSKICH MYŚLICIELI NIERUCHOMOŚCI

    Directory of Open Access Journals (Sweden)

    Edyta Łazarowicz

    2009-11-01

    Full Text Available Fragment artykułu: [b]Andrzej Bieniek[/b] (1895-1944, doktor, urodził się 17 października 1895 r. w Bratucicach (powiat Bochnia, rozstrzelany 26 lipca 1944 roku w ruinach getta w Warszawie. (...Doktor A. Bieniek zajmował się głównie problemami organizacji księgowości w przedsiębiorstwach oraz rachunkiem kosztów. Był autorem m.in. następujących publikacji: Polska metoda księgowości oparta na ekonomicznym systemie Taylora (Biblioteka Państwowej Szkoły Handlowej Męskiej w Łodzi, Łódź 1927, Kantor wzorowy w szkołach handlowych (Biblioteka Państwowej Szkoły Handlowej Męskiej w Łodzi, Warszawa-Łódź 1928, Księgowość w przedsiębiorstwach przemysłowych (Biblioteka Rady Głównej Zrzeszeń Księgowych i Rzeczoznawców Księgowości w Polsce, Warszawa 1935, Zasady inwentaryzacji i bilansowania (Związek Księgowych w Polsce, Warszawa 1936, Organizacja rachunkowości w przedsiębiorstwach przemysłowych ((Związek Księgowych w Polsce, Warszawa 1939, Zasady analizy bilansów (Stowarzyszenie Nauczycieli Szkół Zawodowych. Sekcja Główna Handlowa, Warszawa 1939. [b]Zygmunt Stefan Kossut[/b] (1922–1984 profesor doktor habilitowany, syn Wiktora Kossuta i Henryki Serafin, urodził się 16 kwietnia 1922 r. (.. Do dzisiaj znane jest profesjonalistom zdanie E. Terebuchy, że „on pierwszy (Z. Kossut – M.G. przeorał ugór w naszej nauce rachunkowości, wykonując próbę sformułowania nowych poglądów na metody badawcze w dziedzinie teorii rachunkowości.” [b]Kazimierz Sowa[/b] (1915–1972, profesor nadzwyczajny, doktor, urodził się 2 października 1915 roku w Krakowie w rodzinie chłopskiej, zmarł 17 grudnia 1972 r. w Krakowie. Był żonaty, bezdzietny. (... Okres pracy zawodowej Kazimiera Sowy (1938–1972 był bardzo zróżnicowany i przebiegał wielotorowo. Była to praca naukowo-dydaktyczna w szkolnictwie wyższym, praca redakcyjno-popularyzatorska, organizacyjno-kierownicza w Stowarzyszeniu Księgowych w

  15. Oxygen Isotopic Compositions of Olivine and Pyroxene from CI Chondrites

    Science.gov (United States)

    Leshin, L. A.; Rubin, A. E.; McKeegan, K. D.

    1996-03-01

    The oxygen isotopic compositions of carbonaceous chondrites are complicated since individual components of these meteorites have distinct isotopic compositions that have been affected, to varying degrees, by both nebular and parent body processes. We present the first measurements of oxygen isotopic compositions of rare olivine and pyroxene in the CI chondrites. By combining these data with oxygen isotopic analyses of secondary minerals in these rocks previously reported by Clayton and co-workers, we hope to place quantitative constraints on the physical processes that occurred during formation of these meteorites. The oxygen isotopic composition of separated olivine and pyroxene grains from Orgueil and Ivuna were measured using SIMS. The delta ^(18)O values of the olivines range from ~+3 to +13 and the delta^(17)O values range from ~+1 to +7. The delta^(18)O values of the pyroxenes range from ~+4 to +10 and the delta^(17)O values range from ~+2 to +5. Observations that will be explained in the interpretation of the data are: (1) CI pyroxene and olivine grains have essentially identical oxygen isotopic compositions which are distinct from those measured in other carbonaceous chondrites. (2) All data points except two are indistinguishable from terrestrial values at the one sigma level, and the two exceptions fall only slightly below the terrestrial fractionation line. We consider the data taken as a whole to be consistent with terrestrial values, as well as the slightly positive delta^(17)O values reported previously for matrix and magnetite in CI chondrites. (3) Due to the small range in d values observed relative to the uncertainties, it is not possible to distinguish whether these data fall on a line of approximately slope 1 or slope 1/2.

  16. Combustion Stratification for Naphtha from CI Combustion to PPC

    KAUST Repository

    Vallinayagam, R.

    2017-03-28

    This study demonstrates the combustion stratification from conventional compression ignition (CI) combustion to partially premixed combustion (PPC). Experiments are performed in an optical CI engine at a speed of 1200 rpm for diesel and naphtha (RON = 46). The motored pressure at TDC is maintained at 35 bar and fuelMEP is kept constant at 5.1 bar to account for the difference in fuel properties between naphtha and diesel. Single injection strategy is employed and the fuel is injected at a pressure of 800 bar. Photron FASTCAM SA4 that captures in-cylinder combustion at the rate of 10000 frames per second is employed. The captured high speed video is processed to study the combustion homogeneity based on an algorithm reported in previous studies. Starting from late fuel injection timings, combustion stratification is investigated by advancing the fuel injection timings. For late start of injection (SOI), a direct link between SOI and combustion phasing is noticed. At early SOI, combustion phasing depends on both intake air temperature and SOI. In order to match the combustion phasing (CA50) of diesel, the intake air temperature is increased to 90°C for naphtha. The combustion stratification from CI to PPC is also investigated for various level of dilution by displacing oxygen with nitrogen in the intake. The start of combustion (SOC) was delayed with the increase in dilution and to compensate for this, the intake air temperature is increased. The mixture homogeneity is enhanced for higher dilution due to longer ignition delay. The results show that high speed image is initially blue and then turned yellow, indicating soot formation and oxidation. The luminosity of combustion images decreases with early SOI and increased dilution. The images are processed to generate the level of stratification based on the image intensity. The level of stratification is same for diesel and naphtha at various SOI. When O concentration in the intake is decreased to 17.7% and 14

  17. On the nature of the symbiotic binary CI Cygni

    International Nuclear Information System (INIS)

    Kenyon, S.J.; Oliversen, N.A.; Mikolajewska, J.; Mikolajewski, M.; Stencel, R.E.

    1991-01-01

    An analysis of ultraviolet and optical spectroscopy is presented for the symbiotic binary CI Cyg. This system contains an M5 II asymptotic branch giant Mg of about 1.5 solar mass, transfering material at a few times 0.00001 solar mass/yr into a large accretion disk surrounding a main-sequence star with Mh of about 0.5 solar mass. A boundary layer at the inner edge of the disk photoionizes a small nebula approximately confined to the Roche volume of the accreting star. An extended, more highly ionized region forms when material ejected from the disk interacts with the red giant wind. 115 refs

  18. 40 CFR 60.4211 - What are my compliance requirements if I am an owner or operator of a stationary CI internal...

    Science.gov (United States)

    2010-07-01

    ... I am an owner or operator of a stationary CI internal combustion engine? 60.4211 Section 60.4211... operator of a stationary CI internal combustion engine? (a) If you are an owner or operator and must comply... or operator of a pre-2007 model year stationary CI internal combustion engine and must comply with...

  19. 40 CFR 60.4201 - What emission standards must I meet for non-emergency engines if I am a stationary CI internal...

    Science.gov (United States)

    2010-07-01

    ... non-emergency engines if I am a stationary CI internal combustion engine manufacturer? 60.4201 Section... must I meet for non-emergency engines if I am a stationary CI internal combustion engine manufacturer? (a) Stationary CI internal combustion engine manufacturers must certify their 2007 model year and...

  20. Ciência, sociedade e universidade Science, society and university

    Directory of Open Access Journals (Sweden)

    Pedro Goergen

    1998-08-01

    Full Text Available Este trabalho busca repensar a relação entre ciência, sociedade e universidade a partir das transformações que marcam a contemporaneidade. A hipótese é de que estas mudanças de níveis econômico, laboral e mesmo epistêmico afetam também o sentido da prática acadêmica. A partir da reflexão sobre os três conceitos que compõem o título do artigo - ciência, sociedade e universidade -, conclui-se que a universidade deve iniciar um processo de auto-avaliação que inclua seus próprios fundamentos, ainda modernos, na perspectiva do novo cenário. Esta reflexão básica deve constituir o ponto de partida para uma futura reforma universitária.This paper aims to rethink the relationship between science, society and university from the transformations that mark the contemporary time. The hypothesis is that the changes in economical, labor and epistemic lewels also affect the meaning of academic practice. Reflecting upon the three concepts present in the title of this article - science, society and university - we conclude that university must rethink its identity establish. This basic reflexive thinking should be the first concern to a university reform.

  1. Diversidade sexual e ensino de ciências: buscando sentidos

    Directory of Open Access Journals (Sweden)

    Leandro Jorge Coelho

    2015-12-01

    Full Text Available ResumoO objetivo desse estudo foi analisar os sentidos atribuídos por professores de Ciências e alunos à diversidade sexual. Foram utilizados: questionário, entrevista, produção de textos, análise documental e a técnica de grupo focal para a coleta de dados. De modo geral, os alunos possuem sentidos que reconhecem Lésbicas, Gays, Bissexuais e Transgêneros (LGBT como "estranhos", mesmo assim, acreditam que têm o dever de respeitar as escolhas de cada um. As travestis foram declaradamente apresentadas com repúdio por eles, sendo a homossexualidade e bissexualidade aparentemente mais aceitas. Os professores parecem manter aulas que não abordam estas questões, mesmo o Ensino de Ciências, sendo um momento privilegiado para problematizações sobre diversidade sexual e gênero. É necessário investir em discussões sobre esses temas na formação inicial e continuada de professores, buscando a construção de novos sentidos e práticas que se preocupem com o desvelamento de significados preconceituosos sobre gênero e diversidade sexual.

  2. ANALIZA TRWAŁOŚCI STALOWYCH OBIEKTÓW MOSTOWYCH W ZALEŻNOŚCI OD ŚRODOWISKA KOROZYJNEGO

    Directory of Open Access Journals (Sweden)

    Anna ŚPIEWAK

    Full Text Available W artykule przedstawiono aktualne statystyki dotyczące sieci dróg województwa śląskiego zarządzanych przez Zarząd Dróg Wojewódzkich oraz ilości konstrukcji w zależności od typu ich ustroju nośnego. Poruszono aktualny w Polsce problem dotycząc trwałości stalowych obiektów mostowych z uwzględnieniem zjawiska korozji. Scharakteryzowano podstawowe czynniki wpływające na szybkość korozji niezbędne do oszacowania wpływu korozji na trwałość stalowych mostów drogowych m.in. czynniki atmosferyczne oraz czynniki wynikające z utrzymania obiektu. Zwrócono szczególną uwagę na kategorie korozyjności środowiska w którym wznoszone są konstrukcje stalowe, mające bardzo znaczący wpływ na postęp i szybkość procesu korozji. Omówiono procedurę badania wpływu korozji na trwałość stalowych konstrukcji mostowych opracowaną przez Instytut Badawczy Dróg i Mostów. Przedstawiono metodę obliczania czasu bezawaryjnego użytkowania konstrukcji. Szczegółowo scharakteryzowano, niezbędne do przeprowadzenia procedury obliczeniowej, redukcyjne współczynniki trwałości. Na podstawie własnej analizy określono czas bezawaryjnej pracy wybranych konstrukcji. Do obliczeń przyjęto cztery rzeczywiste mosty o dźwigarach stalowych, będących konstrukcją nośną dla żelbetowej płyty pomostowej. Wybrane mosty wzniesione zostały w różnych częściach kraju, charakteryzujących się odmienną agresywnością środowiska – środowisko nadmorskie, górskie, miejskie oraz neutralne. Obiekty różnią się rodzajem korozji występującym na ustrojach nośnych konstrukcji. Mosty różnią się również czasem powstania obiektów, co wpływa w znacznym stopniu na ich bezpieczne użytkowanie. Na zakończenie przeanalizowano wyniki otrzymane z przeprowadzonej analizy.

  3. Biosorption of C.I. Direct Blue 199 from aqueous solution by nonviable Aspergillus niger

    International Nuclear Information System (INIS)

    Xiong Xiaojing; Meng Xuejiao; Zheng Tianling

    2010-01-01

    The capacity and mechanism with which nonviable Aspergillus niger removed the textile dye, C.I. Direct Blue 199, from aqueous solution was investigated using different parameters, such as initial dye concentration, pH and temperature. In batch experiments, the biosorption capacity increased with decrease in pH, and the maximum dye uptake capacity of the biosorbent was 29.96 mg g -1 at 400 mg L -1 dye concentration and 45 deg. C. The Langmuir and Freundlich models were able to describe the biosorption equilibrium of C.I. Direct Blue 199 onto the fungal biomass. Biosorption followed a pseudo-second order kinetic model with high correlation coefficients (r 2 > 0.99). Thermodynamic studies revealed that the biosorption process was successful, spontaneous and endothermic in nature.

  4. Biosorption of C.I. Direct Blue 199 from aqueous solution by nonviable Aspergillus niger

    Energy Technology Data Exchange (ETDEWEB)

    Xiong Xiaojing, E-mail: xiongxj@xmu.edu.cn [Environmental Science Research Center, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005 (China); Meng Xuejiao [Environmental Science Research Center, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005 (China); Zheng Tianling [Environmental Science Research Center, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005 (China); Key Laboratory of Ministry of Education for Coast and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005 (China)

    2010-03-15

    The capacity and mechanism with which nonviable Aspergillus niger removed the textile dye, C.I. Direct Blue 199, from aqueous solution was investigated using different parameters, such as initial dye concentration, pH and temperature. In batch experiments, the biosorption capacity increased with decrease in pH, and the maximum dye uptake capacity of the biosorbent was 29.96 mg g{sup -1} at 400 mg L{sup -1} dye concentration and 45 deg. C. The Langmuir and Freundlich models were able to describe the biosorption equilibrium of C.I. Direct Blue 199 onto the fungal biomass. Biosorption followed a pseudo-second order kinetic model with high correlation coefficients (r{sup 2} > 0.99). Thermodynamic studies revealed that the biosorption process was successful, spontaneous and endothermic in nature.

  5. Korzyści karmienia piersią dla matki

    Directory of Open Access Journals (Sweden)

    Magdalena Gibas-Dorna

    2012-12-01

    Full Text Available Powszechnie wiadomo, że karmienie piersią pozytywnie wpływa na zdrowie dziecka oraz jego rozwój intelek‑ tualny. światowa Organizacja Zdrowia (World Health Organization, WHO zaleca rozpoczęcie karmienia piersią od pierwszej godziny po porodzie i jego kontynuację przez okres co najmniej 6 miesięcy, a w miarę urozmaicania diety dziecka rekomenduje utrzymanie tego sposobu żywienia mniej więcej do 2. roku życia, traktując mleko matki jako najlepszy jakościowo pokarm uzupełniający. Coraz częściej podkreśla się protek‑ cyjną rolę karmienia naturalnego w rozwoju różnych chorób u matek oraz potencjalne skutki unikania prze‑ dłużonej laktacji. Wydaje się, że korzyści dla matki mają charakter wczesny (podczas połogu oraz długofa‑ lowy. Tuż po porodzie karmienie piersią przyspiesza obkurczanie macicy, zapobiega nadmiernej utracie krwi, chroni przed niedokrwistością z niedoboru żelaza, przeciwdziała wystąpieniu depresji poporodowej, umacnia więź matka – dziecko oraz poprawia zaburzoną w tym okresie jakość snu. Korzyści długofalowe wiążą się z obniżeniem ryzyka wystąpienia niektórych chorób nowotworowych (rak sutka, rak endometrium, rak jajni‑ ka, chorób sercowo‑naczyniowych (choroba niedokrwienna serca, nadciśnienie tętnicze, zaburzeń metabo‑ licznych (cukrzyca, nietolerancja glukozy, otyłość, hiperlipidemia, hiperinsulinemia, reumatoidalnego zapa‑ lenia stawów czy osteoporozy. Przedłużenie okresu laktacji i karmienia piersią ma również wymierną korzyść ekonomiczną i stanowi darmową naturalną antykoncepcję. Poniższa praca podsumowuje aktualny stan wie‑ dzy na temat wpływu karmienia piersią na zdrowie matek karmiących.

  6. Estudos de Comunidade e ciências sociais no Brasil

    Directory of Open Access Journals (Sweden)

    Nemuel da Silva Oliveira

    2011-12-01

    Full Text Available O objetivo deste artigo é fazer um balanço da literatura sobre os Estudos de Comunidade (EC no Brasil, destacando o contexto intelectual em que foram produzidos e os debates que suscitaram, especialmente entre as décadas de 1940 e 1960. Método de pesquisa em comunidades, oriundo da Antropologia, em investigações sobre o processo de mudança social, os EC estiveram em voga nos Estados Unidos entre os anos 1920 e 1950, tendo papel fundamental na institucionalização das Ciências Sociais no Brasil. Destacamos três aspectos na produção desses estudos no país, iniciando com uma abordagem conceitual: definições, origem e sua relação com temáticas marcantes nos anos 1950. Em seguida, privilegiamos os aspectos relacionados ao papel dos EC na história das Ciências Sociais no Brasil, com destaque para o processo de institucionalização das Ciências Sociais. Por fim, revisitamos os debates que tais estudos geraram entre os cientistas sociais quanto ao padrão de trabalho sociológico a ser desenvolvido naquele momento.The purpose of this article is to examine the literature about Community Studies(CS in Brazil, highlighting their intellectual context of production and the debates evoked by them, especially between the 1940's and 1960's. As a research method arising from Anthropology on communities in social change process, CS was used in United States between 1920's and 1950's, and played a fundamental role in the institutionalization of Social Sciences in Brazil. Three aspects are highlighted on CS production: first, in a conceptual approach, we discuss their definitions, origins and relation to main topics in the 1950's. The second aspect is related to the role of CS in the history of Social Sciences, especially their institutionalization process. By the end, we revisit the debates between social scientists about the sociological work standard to be developed at that time.

  7. Ciência da Computação

    Directory of Open Access Journals (Sweden)

    André Felipe Henriques Librantz

    2006-01-01

    Full Text Available Este trabalho apresenta um sistema de navegação autônoma de robôs construídos com kits Lego Mindstorms, para cálculo de trajetórias. Esse sistema pode ser utilizado como instrumento pedagógico multidisciplinar no curso de Ciência da Computação, uma vez que, para o seu desenvolvimento são necessários conhecimentos de algoritmos, linguagem de programação, lógica computacional, estrutura de dados, inteligência artificial (IA, redes de computadores, computação gráfica e robótica.

  8. Fazer ciência: o lugar do conceito

    Directory of Open Access Journals (Sweden)

    Wilton Garcia

    2007-06-01

    Full Text Available Este texto visa abrir uma discussão acerca da pesquisa contemporânea, investindo o enfoque no discurso científico para uma abordagem dinâmica de estratégias discursivas. Tento realizar uma reflexão crítica sobre a produção do saber em alguns procedimentos conceituais. Neste caso, remeto o olhar a uma consideração teórico-metodológica que pretende contribuir à atualização do discurso da ciência, hoje, e permita propor maior flexibilidade e deslocamento diante das diferentes produções de conhecimento. Este trabalho, portanto, não pretende expor, diretamente, idéias sobre ciência, mas sobre o discurso dito científico. Nesta investigação crítica, apresento sucintamente a noção de pós-(desconstrução. Utilizo os estudos contemporâneos como eixo teórico-metodológico para este desenvolvimento argumentativo. Os estudos contemporâneos pesquisam as atualizações de conceitos, que se organizam mediante a produção de atualidades e vasculham uma (redimensão teórica e política, associada ao sistema flexível da linguagem. Essas atualizações esboçam a área dos estudos contemporâneos em sua intensidade descritiva, quando aciona um olhar investigativo sobre as inovações no discurso científico, hoje.

  9. In-cylinder Combustion and Soot Evolution in the Transition from Conventional CI mode to PPC

    KAUST Repository

    An, Yanzhao

    2018-01-09

    The present study intends to explore the in-cylinder combustion and evolution of soot emission during the transition from conventional compression ignition (CI) combustion to partially premixed combustion (PPC) at low load conditions. In-cylinder combustion images and engine-out emissions were measured in an optical engine fueled with low octane heavy naphtha fuel (RON = 50). Full cycle engine simulations were performed using a three-dimensional computational fluid dynamics code CONVERGETM, coupled with gas phase chemical kinetics, turbulence, and particulate size mimic soot model. The simulations were performed under low load conditions (IMEP ~ 2 to 3 bar) at an engine speed of 1200 rpm. The start of injection (SOI) was advanced from late (-10 CAD aTDC) to early fuel injection timings (-40 CAD aTDC) to realize the combustion transition from CI combustion to PPC. The simulation results of combustion and emission are compared with the experimental results at both CI and PPC combustion modes. The results of the study show a typical low-temperature stratified lean combustion at PPC mode, while high-temperature spray-driven combustion is evident at CI mode. The in-cylinder small intermediates species such as acetylene (C2H2), propargyl (C3H3), cyclopentadienyl (C5H5) and polycyclic aromatic hydrocarbons (PAHs) were significantly suppressed at PPC mode. Nucleation reaction of PAHs collision contributed to main soot mass production. The distribution of soot mass and particle number density was consistent with the distribution of high-temperature zones at CI and PPC combustion modes.

  10. Trophic analysis of the fish community in the Ciénega Churince, Cuatro Ciénegas, Coahuila

    Directory of Open Access Journals (Sweden)

    Ariana Hernández

    2017-09-01

    Full Text Available Fish diets were analyzed to evaluate the dynamic trophs of the fish community in the Churince wetland system of the Cuatro Ciénegas, where the fauna consists of nine species: endemic, native and introduced. In nine sampling events (between February 2011 and May 2014 556 specimens of all nine species were collected. Stomach contents were analyzed and the Relative Importance Index (IRI was calculated. The feed coefficient (Q of the diets and the accumulated trophic diversity (Hk, as well as the amplitude of the trophic niche were evaluated. Feeding strategies in the fish community were found to be eurifagic. The main foods in general were insects, crustaceans, gastropods, plants and teleosts. According to the average linkage method, four functional trophic groups were defined, with no higher consumption species; nevertheless all were regulators, mainly invertebrates. Therefore, the chain reaction in food control was higher from top to bottom, meaning a downwards dietary control.

  11. Ética, ciência e tecnologia

    Directory of Open Access Journals (Sweden)

    Ivan Domingues

    2004-06-01

    Full Text Available O artigo visa pensar a relação entre ética, ciência e tecnologia, enfatizando o problema de sua revinculação depois da cisão entre os juízos de fato e os juízos de valor, ocorrida no início dos tempos modernos. Uma vez examinada a ética da aristocracia guerreira e a moral do santo, procura-se delinear o caminho tomando como referência a ética da responsabilidade, cujo protótipo é a moral do sábio, desaparecido no curso dos tempos modernos, em razão da fragmentação do saber e do advento do especialista. Ao fim do estudo, é discutida a relação entre a ética e a metafísica, com o intuito de ajustar a questão antropológica à perspectiva cosmológica, bem como de fornecer as bases de um novo humanismo, objetivando a humanização da técnica e a geração de um novo homem, alfabetizado em ciência, tecnologia e humanidades.The article aims at thinking the relation among ethics, science and technology, emphasizing the problem of their re-tying, after the division into judgments of fact and judgments of value, wich happened in the begininning of modern times. Since the warlike aristocracy's ethics and the saint man's moral are examined, it tries to outline its way, taking as a reference the ethics of responsability, whose prototype is the wise man's moral, which disappeared in the course of modern times, due to the fragmentation of knowing and the advent of the specialist. At the end of the study, the relationship between ethics and metaphysics is discussed, aiming at adjusting the anthropological question to the cosmological perspective, as well as at providing the bases of a new humanism, objectifying the humanization of the technique and the generation of a new man, literate at science, technology and the humanities.

  12. Culturas das Ciências Naturais Cultures of Natural Sciences

    Directory of Open Access Journals (Sweden)

    Maria Margaret Lopes

    2005-12-01

    Full Text Available Este artigo apresenta subsídios para o ensino de História das Ciências, considerando particularmente o campo da História da História Natural e das Ciências Naturais. Sem ser uma revisão completa da historiografia desses campos de conhecimento sobre o mundo natural, retoma alguns traços gerais desses longos processos de definição de campos disciplinares que se configuram desde a Renascença até o final do século XVIII. Considera diversas tradições culturais e historiográficas que contribuíram para os nossos entendimentos atuais, de como a História Natural do Renascimento foi abandonando seus antigos quadros conceituais, assumindo novas práticas e se constituindo nas tradições da História Natural do século XVIII. Comenta esses processos, em que tanto a Botânica, a Zoologia, a Mineralogia se individualizam como áreas de conhecimentos apoiadas em práticas locais e coleções globais, indo além de sua subordinação à utilidade médica; bem como suas organizações em áreas de conhecimento, por começarem a se colocar questões relativas à origem e à historicidade dos seres e processos naturais, dados os avanços das temáticas classificatórias e das discussões envolvendo temporalidades.This paper provides insights into the teaching of the History of Science, especially the field of the History of Natural History and Natural Sciences. Although not claiming to be a complete historiographic review of these areas of knowledge about the natural world, it outlines the general traits of the long process of definition of disciplines that were shaped from the Renaissance to the end of the XVIII century. It encompasses various cultural and historiographic traditions that contributed to our present understanding of how Renaissance Natural History abandoned its ancient conceptual frameworks and assumed new practices and shaped itself in the tradition of XVIII century Natural History. The paper comments on these processes by which

  13. Variações sobre arte e ciência

    Directory of Open Access Journals (Sweden)

    Octavio Ianni

    2004-06-01

    Full Text Available O texto propõe aproximações entre ciência e arte por meio de contrastes e semelhanças reconhecíveis nessas modalidades discursivas de conhecimento, como linguagens e narrativas singulares, dotadas de características próprias, mas que freqüentemente se valem de procedimentos e recursos alheios. Busca salientar tanto os usos de recursos ficcionais pelos textos científicos, como o contrário, as valências cognitivas e mesmo a reconstrução complexa de experiências sociais pelos textos literários, articulados por uma ambição estética.The text establishes connections between science and art through the contrasts and similarities traceables in those discourses of knowledge, while languages and peculiar narratives endowed with its own traits, but that quite often appeal to alien proce-dures and resources. It seeks to point out the uses of fiction resources in scientific texts, as the opposite, the cognitives assets and even the complex reconstruction of social experiences found out literary texts, moved by an aesthetic ambition.

  14. B[e] Star CI Cam: Eighteen Years of Research

    Science.gov (United States)

    Goranskij, V. P.; Barsukova, E. A.; Bjorkman, K. S.; Burenkov, A. N.; Klochkova, V. G.; Manset, N.; Metlova, N. V.; Miroshnichenko, A. S.; Panchuk, V. E.; Yushkin, M. V.; Zharikov, S. V.

    2017-02-01

    We present the results of extensive spectroscopic and photometric observations of CI Cam performed after its outburst in April 1998. The outburst was interpreted as a thermonuclear runaway of hydrogen on the surface of a white dwarf (WD). We detected variations of both the brightness and the He II 4686 Å line radial velocity with a period of 19d.400±0d.015 due to orbital motion of the WD. The rapid brightness variations on a timescale of hours is explained by pulsations of a B4 III-V[e] star. In 2012, the system entered an active state with the stronger He II line and with the brightness increased by 0.4 mag. We observed a slow low-amplitude drift in the velocity of Fe II and [N II] emission lines which we explained by the orbital motion of the B[e] star + WD system along with all its gaseous environment around a third companion invisible in the spectra. The active phase of the B[e] star might have been initiated by a close approach of the binary and the third companion in 2007.

  15. Cientometria: a métrica da ciência

    Directory of Open Access Journals (Sweden)

    José Aparecido da Silva

    2001-01-01

    Full Text Available Cientometria é definida como o estudo da mensuração e quantificação do progresso científico, estando a pesquisa baseada em indicadores bibliométricos. A cientometria tem um grande potencial de aplicação, havendo interesse de Governos e instituições de pesquisas em utilizar este conhecimento com o objetivo de implementar diferentes formas de apoio ao desenvolvimento científico e tecnológico. Nos últimos tempos, também, ela tem sido usada para ajudar nações a tomarem decisões sobre quais áreas do saber necessitam de fundos especiais; além disso, a análise das citações ou dos fatores de impacto de periódicos e artigos vem se tornando uma fonte importante de informação para historiadores, sociólogos e outros pesquisadores interessados na evolução da ciência. Este artigo focaliza como diferentes indicadores de citação tornam possível verificar tanto a evolução das descobertas quanto o impacto do trabalho publicado. Esta análise quantitativa complementa as opiniões e os julgamentos realizados por especialistas (avaliação pelos pares, fornecendo instrumentos úteis e objetivos para avaliar os resultados da atividade científica.

  16. Determination of drug, excipients and coating distribution in pharmaceutical tablets using NIR-CI

    Directory of Open Access Journals (Sweden)

    Anna Palou

    2012-04-01

    Full Text Available The growing interest of the pharmaceutical industry in Near Infrared-Chemical Imaging (NIR-CI is a result of its high usefulness for quality control analyses of drugs throughout their production process (particularly of its non-destructive nature and expeditious data acquisition. In this work, the concentration and distribution of the major and minor components of pharmaceutical tablets are determined and the spatial distribution from the internal and external sides has been obtained. In addition, the same NIR-CI allowed the coating thickness and its surface distribution to be quantified. Images were processed to extract the target data and calibration models constructed using the Partial Least Squares (PLS algorithms. The concentrations of Active Pharmaceutical Ingredient (API and excipients obtained for uncoated cores were essentially identical to the nominal values of the pharmaceutical formulation. But the predictive ability of the calibration models applied to the coated tablets decreased as the coating thickness increased. Keywords: Near infrared Chemical Imaging (NIR-CI, Hyperspectral imaging, Component distribution, Tablet coating distribution, Partial Least Squares (PLS regression

  17. A Biblioteconomia e a Ciência da Informação na taxionomia das ciências de Charles Sanders Peirce

    Directory of Open Access Journals (Sweden)

    Carlos Cândido de Almeida

    2005-07-01

    Full Text Available Mostra a taxionomia das ciências desenvolvida por Charles Sanders Peirce (1839-1914 que divide as ciências em três ramos: ciências teóricas, ciências da revisão e ciências aplicadas. Detalha principalmente as ciências teóricas: a Matemática, a Filosofia e a Idioscopia. Discute também o conceito de Biblioteconomia e de Ciência da Informação e que segundo as definições e características, encontradas na literatura consultada, estão na condição de ciências aplicadas, direcionadas a problemas práticos da sociedade, ou seja, o problema de controle e disseminação da informação.

  18. Um olhar sobre as concepções de ciência e ensino de ciências de alunos-concluintes de química

    OpenAIRE

    RIBEIRO, Evandro Luiz da Luz

    2005-01-01

    O objetivo deste trabalho foi o de investigar as concepções de Ciência e de Ensino de Ciências de alunos concluintes de Licenciatura Plena em Ciências com habilitação em Química, turma de concluintes do segundo semestre de 2004 na UFPA, contando com uma total de 12 sujeitos de pesquisa. Para a identificação das concepções de Ciência e de Ensino de Ciências, foi elaborado um questionário, previamente testado com 15 alunos concluintes do Curso de Licenciatura Plena em Biologia, objetivando a va...

  19. A mutation in Myo15 leads to Usher-like symptoms in LEW/Ztm-ci2 rats

    NARCIS (Netherlands)

    Held, N.; Smits, B.M.; Gockeln, R.; Schubert, S.; Nave, H.; Northrup, E.; Cuppen, E.; Hedrich, H.J.; Wedekind, D.

    2011-01-01

    The LEW/Ztm-ci2 rat is an animal model for syndromal deafness that arose from a spontaneous mutation. Homozygous animals show locomotor abnormalities like lateralized circling behavior. Additionally, an impaired vision can be observed in some animals through behavioral studies. Syndromal deafness as

  20. As ciências naturais e as ciências do espírito na era da globalização

    Directory of Open Access Journals (Sweden)

    Jaeschke, Walter

    2006-01-01

    Full Text Available Este artigo, o autor apresenta, primeiramente, reflexões de cunho histórico sobre a relação entre as Ciências Naturais e as Ciências do Espírito, seguidas de observações, de caráter mais sistemático, sobre o conceito das próprias Ciências do Espírito. Com fundamento nessas observações, tece algumas reflexões sobre até que ponto podemos esperar da globalização efeitos sobre as Ciências Naturais e as Ciências do Espírito

  1. Experimental and Numerical Investigation of Ethanol/Diethyl Ether Mixtures in a CI Engine

    KAUST Repository

    Sivasankaralingam, Vedharaj

    2016-10-17

    The auto-ignition characteristics of diethyl ether (DEE)/ethanol mixtures are investigated in compression ignition (CI) engines both numerically and experimentally. While DEE has a higher derived cetane number (DCN) of 139, ethanol exhibits poor ignition characteristics with a DCN of 8. DEE was used as an ignition promoter for the operation of ethanol in a CI engine. Mixtures of DEE and ethanol (DE), i.e., DE75 (75% DEE + 25% ethanol), DE50 (50% DEE + 50% ethanol) and DE25 (25% DEE + 75% ethanol), were tested in a CI engine. While DE75 and DE50 auto-ignited at an inlet air pressure of 1.5 bar, DE25 failed to auto-ignite even at boosted pressure of 2 bar. The peak in-cylinder pressure for diesel and DE75 were comparable, while DE50 showed reduced peak in-cylinder pressure with delayed start of combustion (SOC). Numerical simulations were conducted to study the engine combustion characteristics of DE mixture. A comprehensive detailed chemical kinetic model was created to represent the combustion of DE mixtures. The detailed mechanism was then reduced using standard direct relation graph (DRG-X) method and coupled with 3D CFD code, CONVERGE, to simulate the experimental data. The simulation results showed that the effects of physical properties on DE50 combustion are negligible. Simulations of DE50 mixture revealed that the combustion is nearly homogenous, while diesel (n-heptane used as a surrogate) and DE75 showed similar combustion behavior with flame liftoff and diffusion controlled combustion. Diesel exhibited auto-ignition at an equivalence ratio of 2, while DE75 and DE50 showed auto-ignition in the equivalence ratio range of 1-1.5 and 0-1, respectively. The experiments and numerical simulations demonstrate how the high reactivity of DEE supports the auto-ignition of ethanol, while ethanol acts as a radical scavenger.

  2. Assessing precision, bias and sigma-metrics of 53 measurands of the Alinity ci system.

    Science.gov (United States)

    Westgard, Sten; Petrides, Victoria; Schneider, Sharon; Berman, Marvin; Herzogenrath, Jörg; Orzechowski, Anthony

    2017-12-01

    Assay performance is dependent on the accuracy and precision of a given method. These attributes can be combined into an analytical Sigma-metric, providing a simple value for laboratorians to use in evaluating a test method's capability to meet its analytical quality requirements. Sigma-metrics were determined for 37 clinical chemistry assays, 13 immunoassays, and 3 ICT methods on the Alinity ci system. Analytical Performance Specifications were defined for the assays, following a rationale of using CLIA goals first, then Ricos Desirable goals when CLIA did not regulate the method, and then other sources if the Ricos Desirable goal was unrealistic. A precision study was conducted at Abbott on each assay using the Alinity ci system following the CLSI EP05-A2 protocol. Bias was estimated following the CLSI EP09-A3 protocol using samples with concentrations spanning the assay's measuring interval tested in duplicate on the Alinity ci system and ARCHITECT c8000 and i2000 SR systems, where testing was also performed at Abbott. Using the regression model, the %bias was estimated at an important medical decisions point. Then the Sigma-metric was estimated for each assay and was plotted on a method decision chart. The Sigma-metric was calculated using the equation: Sigma-metric=(%TEa-|%bias|)/%CV. The Sigma-metrics and Normalized Method Decision charts demonstrate that a majority of the Alinity assays perform at least at five Sigma or higher, at or near critical medical decision levels. More than 90% of the assays performed at Five and Six Sigma. None performed below Three Sigma. Sigma-metrics plotted on Normalized Method Decision charts provide useful evaluations of performance. The majority of Alinity ci system assays had sigma values >5 and thus laboratories can expect excellent or world class performance. Laboratorians can use these tools as aids in choosing high-quality products, further contributing to the delivery of excellent quality healthcare for patients

  3. Vespeiros da razão: perspectivas para um diálogo entre as ciências biológicas e as ciências sociais

    Directory of Open Access Journals (Sweden)

    Ricardo Waizbort

    2008-01-01

    Full Text Available Desde pelo menos A origem das espécies, de Darwin, publicado em 1859, cientistas naturais e cientistas sociais têm discutido a possibilidade de unificar as ciências biológicas e as humanas. O presente artigo tem como objetivo trazer à luz algumas dessas tentativas de considerar a importância das bases biológicas para compreender e explicar certos aspectos do comportamento humano. Embora esse seja um tema um tanto conturbado, sobretudo quando visto de um ponto de vista político, nas últimas décadas foram desenvolvidos modelos testáveis que indicam que os sistemas genéticos dos seres humanos são necessários, mas não suficientes, para equacionarmos certos conflitos de interesse que surgem nas mais variadas formas de interação social.Ever since Darwin published The origin of species, in 1859, natural and social scientists have been arguing about the possibility of constructing a bridge between biological and social sciences. The aim of this article is to shed light on some of these approaches in order to comprehend and explain some aspects of human behavior. Although such an issue is very controversial, mainly in a political perspective, in recent decades scientists have developed assayable models demonstrating the necessity of genetic systems, to equate certain interest conflicts that appear in variable forms of social interactions.

  4. Compact Combustor Integrated (CI) with Compressor and Turbine for Perspective Turbojet Engine

    Science.gov (United States)

    Strokin, V. N.; Volkov, S. A.; Ljashenko, V. P.; Popov, V. I.; Startzev, A. N.; Nigmatullin, R. Z.; Shilova, T. V.; Belikov, U. V.

    2017-11-01

    For several years, CIAM has conducted comprehensive work on the development the combustor integrated (CI) with air swirling. This project involved an integrated development of three components: diffuser, combustion chamber and nozzle guide vanes of turbine to reduce their length and, respectively, the length of the engine and obtain high performance elements with low emissions of harmful substances. The new frontal device was proposed for CI combustor. The design optimization of this type combustor was conducted in the compartments and in a full-size combustion chamber. It was shown the possibility of obtaining high combustion efficiency and low NOx emissions at a short length on cruise condition. By a simplified model of the frontal device it was shown experimentally that the proposed device provided a lighting-up and flame spreading in a wide range of equivalence ratio ER (ER > 0.014) at idling. It was shown that short vane diffuser with moderate swirling ensured high parameters of the combustion chamber. The use of residual swirling of the combustion products at the exit of combustor allows reducing the size, or the number of nozzle guide vanes of the turbine. In General, the use of the swirling of the air stream gives a possibility of total length reduction for all three elements by about 20 – 25 %.

  5. The linker pivot in Ci-VSP: the key to unlock catalysis.

    Directory of Open Access Journals (Sweden)

    Kirstin Hobiger

    Full Text Available In the voltage-sensitive phosphatase Ci-VSP, conformational changes in the transmembrane voltage sensor domain (VSD are transduced to the intracellular catalytic domain (CD leading to its dephosphorylation activity against membrane-embedded phosphoinositides. The linker between both domains is proposed to be crucial for the VSD-CD coupling. With a combined approach of electrophysiological measurements on Xenopus oocytes and molecular dynamics simulations of a Ci-VSP model embedded in a lipid bilayer, we analyzed how conformational changes in the linker mediate the interaction between the CD and the activated VSD. In this way, we identified specific residues in the linker that interact with well-defined amino acids in one of the three loops forming the active site of the protein, named TI loop. With our results, we shed light into the early steps of the coupling process between the VSD and the CD, which are based on fine-tuned electrostatic and hydrophobic interactions between the linker, the membrane and the CD.

  6. DNA damage in isolated rat hepatocytes exposed to C.I. pigment orange 5 and C.I. pigment yellow 12 by the alkaline comet assay

    DEFF Research Database (Denmark)

    Møller, P; Wallin, Håkan; Grunnet, N

    1998-01-01

    , and C.I. pigment orange 5 is a naphthol-azo pigment. The pigments are virtually insoluble in aqueous solutions, and they have not been tested extensively for toxicological effects. C.I. pigment orange 5 increased the levels of DNA damage at 5 microg/ml (P pigment yellow 12 at 20 microg....../ml (P effect of incubation time (20, 40, and 80 min) of the same concentrations of the pigments was tested. The levels of DNA damage were increased up to 80 min. Both pigments produced DNA damage that was in the same range as the food carcinogen 2-amino-3,8-dimethylimidazo[4,5-f......The induction of DNA damage by commonly used printing ink pigments, C.I. pigment orange 5 (C.I. 12075) and C.I. pigment yellow 12 (C.I. 21090), was investigated in freshly isolated rat hepatocytes with the comet assay. C.I. pigment yellow 12 is a 3,3'-dichlorobenzidine-based diarylide pigment...

  7. CI in the work place: does involving the HRM function make any difference?

    DEFF Research Database (Denmark)

    Hyland, Paul; Becker, Karen; Sload, Terry

    2008-01-01

    People are central to successful Continuous Improvement (CI), and in larger organisations a Human Resource Management (HRM) function is responsible for people related issues. Central to CI is learning and a culture that supports CI. Learning needs to be both individual and organisational, and must...... benefit the organisation's performance. The HRM function is often given the task of championing cultural change and managing aspects of training and learning, and it would appear that involvement of HRM professionals would enhance CI efforts and assist in the timely solution of issues within the CI...

  8. Formação de doutores no Brasil: o esgotamento do modelo vigente frente aos desafios colocados pela emergência do sistema global de ciência Doctoral education in Brazil: the weariness of the current model in face of the challenges posed by the emergence of the global system of science

    Directory of Open Access Journals (Sweden)

    Milena Yumi Ramos

    2013-03-01

    Full Text Available Este artigo discute como a formação de pesquisadores é influenciada pela dinâmica de produção e uso do conhecimento num determinado contexto de aplicação. Desenvolve-se o argumento de que a política de pós-graduação no Brasil, orientada à carreira e ao desempenho acadêmico, como impõe o modelo de avaliação da Capes, não é capaz de atender às novas competências e papéis esperados dos doutores no atual cenário de intensificação das relações e do intercâmbio científico, econômico e cultural no âmbito nacional e, especialmente, internacional.This paper discusses how research education is influenced by the dynamics of knowledge production and use within a given context of application. It is argued that the graduate policy in Brazil, driven to academic career and performance as determined by Capes' evaluation model, does not enable the development of new competences and roles expected from doctorate holders in the current scenario marked by the intensification of relations and exchanges within scientific, economic and cultural realms, both nationally and mainly internationally.

  9. Near-infrared chemical imaging (NIR-CI) of 3D printed pharmaceuticals

    DEFF Research Database (Denmark)

    Khorasani, Milad; Edinger, Magnus; Raijada, Dharaben Kaushikkumar

    2016-01-01

    Hot-melt extrusion and 3D printing are enabling manufacturing approaches for patient-centred medicinal products. Hot-melt extrusion is a flexible and continuously operating technique which is a crucial part of a typical processing cycle of printed medicines. In this work we use hot-melt extrusion...... for manufacturing of medicinal films containing indomethacin (IND) and polycaprolactone (PCL), extruded strands with nitrofurantoin monohydrate (NFMH) and poly (ethylene oxide) (PEO), and feedstocks for 3D printed dosage forms with nitrofurantoin anhydrate (NFAH), hydroxyapatite (HA) and poly (lactic acid) (PLA......). These feedstocks were printed into a prototype solid dosage form using a desktop 3D printer. These model formulations were characterized using near-infrared chemical imaging (NIR-CI) and, more specifically, the image analytical data were analysed using multivariate curve resolution-alternating least squares (MCR...

  10. DNA damage in isolated rat hepatocytes exposed to C.I. pigment orange 5 and C.I. pigment yellow 12 by the alkaline comet assay

    DEFF Research Database (Denmark)

    Møller, P; Wallin, Håkan; Grunnet, N

    1998-01-01

    , and C.I. pigment orange 5 is a naphthol-azo pigment. The pigments are virtually insoluble in aqueous solutions, and they have not been tested extensively for toxicological effects. C.I. pigment orange 5 increased the levels of DNA damage at 5 microg/ml (P .../ml (P effect of incubation time (20, 40, and 80 min) of the same concentrations of the pigments was tested. The levels of DNA damage were increased up to 80 min. Both pigments produced DNA damage that was in the same range as the food carcinogen 2-amino-3,8-dimethylimidazo[4,5-f......]quinoxaline. Our data indicate that both C.I. pigment orange 5 and C.I. pigment yellow 12 are genotoxic in hepatocytes with metabolizing capacities. However, further investigation of the metabolism and disposition are required for the evaluation of the safety of these pigments....

  11. Ciência 2.0: uma experiência em comunicação e em jornalismo de ciência

    OpenAIRE

    Renata Sofia Gomes da Silva

    2012-01-01

    O presente documento versa sabre uma experiência de três meses de estágio, em comunicação e em jornalismo de ciência, entre novembro de 2011 e janeiro de 2012, no Ciência 2.0, urn projeto que aposta na comunicação e divulgação da ciência através de conteúdos multiplataforma. Trata-se de uma iniciativa levada a cabo na Universidade do Porto que pretende aproximar a Ciência da sociedade,conferindo uma dimensão explicativa a varios temas de interesse através de meios como o áudio,vídeo, infograf...

  12. As tendências atuais dos paradigmas: ciência, tecnologia e sociedade e ensino de ciências indígena no VII ENPEC

    Directory of Open Access Journals (Sweden)

    Maria Delourdes Maciel

    2014-01-01

    Full Text Available O Encontro Nacional de Pesquisas em Educação em Ciências é um evento bianual organizada pelos pesquisadores do ensino de Ciências. O objetivo principal desse encontro é reunir os professores e pesquisadores da área, para socializarem os relatos de experiência e pesquisas no ensino de Ciências. Nesse presente trabalho, foi realizado um mapeamento dos artigos apresentados nas seções de comunicação oral do VII ENPEC, somando um total de 425 artigos selecionados, procurou-se identificar os relacionados com a abordagem Ciências, Tecnologia e Sociedade (CTS no ensino de Ciências sua estrutura de organização e o numero de pesquisadores dessa área do Ensino de Ciências. Para esse estudo foi realizado uma pesquisa qualitativa de caráter bibliográfico, e para a análise dos dados buscou-se subsídios teóricos em Fiorentini (2002 e Bardin (2006 porque assim seria possível comparar minuciosamente os diferentes resultados obtidos. Conclui-se que a linha de pesquisa com a temática CTS apresentou 28 trabalhos cerca de 7% de trabalhos apresentados, confirmando uma sinalização nessa área de pesquisa pelos pesquisadores do ensino de Ciências e a temática sobre ensino de ciências indígena representou cerca de 1% dos trabalhos apresentados.

  13. A natureza da ciência nos currículos de ciências — Estudo do currículo de Ciências Naturais do 3º ciclo do ensino básico

    OpenAIRE

    Ferreira, Sílvia; Morais, Ana Maria

    2018-01-01

    O estudo analisa em que medida a mensagem sociológica transmitida pelo Discurso Pedagógico Oficial veiculado no currículo de Ciências Naturais do 3º ciclo do ensino básico português contempla a natureza da ciência. A investigação apresenta pressupostos epistemológicos e sociológicos e está particularmente baseada na teoria do discurso pedagógico de Bernstein e na conceptualização de Ziman sobre a construção da ciência. O estudo usou uma metodologia mista e seguiu um processo dialéctico entre ...

  14. Proarrhythmia liability assessment and the comprehensive in vitro Proarrhythmia Assay (CiPA): An industry survey on current practice.

    Science.gov (United States)

    Authier, Simon; Pugsley, Michael K; Koerner, John E; Fermini, Bernard; Redfern, William S; Valentin, Jean-Pierre; Vargas, Hugo M; Leishman, Derek J; Correll, Krystle; Curtis, Michael J

    2017-07-01

    The Safety Pharmacology Society (SPS) has conducted a survey of its membership to identify industry practices related to testing considered in the Comprehensive In vitro Proarrhythmia Assay (CiPA). Survey topics included nonclinical approaches to address proarrhythmia issues, conduct of in silico studies, in vitro ion channel testing methods used, drugs used as positive controls during the conduct of cardiac ion channel studies, types of arrhythmias observed in non-clinical studies and use of the anticipated CiPA ion channel assay. In silico studies were used to evaluate effects on ventricular action potentials by only 15% of responders. In vitro assays were used mostly to assess QT prolongation (95%), cardiac Ca 2+ and Na + channel blockade (82%) and QT shortening or QRS prolongation (53%). For de-risking of candidate drugs for proarrhythmia, those assays most relevant to CiPA including cell lines stably expressing ion channels used to determine potency of drug block were most frequently used (89%) and human stem cell-derived or induced pluripotent stem cell cardiomyocytes (46%). Those in vivo assays related to general proarrhythmia derisking include ECG recording using implanted telemetry technology (88%), jacketed external telemetry (62%) and anesthetized animal models (53%). While the CiPA initiative was supported by 92% of responders, there may be some disconnect between current practice and future expectations, as explained. Proarrhythmia liability assessment in drug development presently includes study types consistent with CiPA. It is anticipated that CiPA will develop into a workable solution to the concern that proarrhythmia liability testing remains suboptimal. Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.

  15. Max Weber e a objetividade do conhecimento nas ciências da cultura: um breve guia para o texto A ‘Objetividade’ do Conhecimento na Ciência Social e na Ciência Política (1904

    Directory of Open Access Journals (Sweden)

    Jean Henrique Costa

    2011-05-01

    Full Text Available

    O presente artigo objetiva discutir o sentido da objetividade do conhecimento empírico-social na obra de Max Weber, especificamente no texto “A ‘Objetividade’ do Conhecimento na Ciência Social e na Ciência Política”, de 1904. Discute-se, no primeiro momento, a distinção entre conhecimento empírico e juízo de valor; no segundo momento, faz-se uma rápida crítica às idéias de “lei” e “conexão regular” nas ciências sociais para, em seguida, na terceira parte, discutir a estrutura da formação dos conceitos típico-ideais como recursos metodológicos, nos quais, para Weber, expressam a possibilidade da validade objetiva do conhecimento nas ciências da cultura.

  16. Por uma sociologia crítica da ciência

    OpenAIRE

    Jarvie,Ian; Agassi,Joseph

    2011-01-01

    Neste artigo crítico e construtivo, defendemos que a Sociologia da Ciência, como está estabelecida, é distorcida por uma suposta filosofia idealista que estimula uma atitude acrítica em relação ao que se supõe serem fatos. Propomos uma sociologia crítica da ciência que faz a distinção entre ciência, ciência aplicada e tecnologia; enfoca a falibilidade da ciência e da sociologia da ciência que desconstrói toda pretensão de autoridade. Construtivamente, esboçamos os elementos de uma sociologia ...

  17. 21 CFR 73.3112 - C.I. Vat Orange 1.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 1 2010-04-01 2010-04-01 false C.I. Vat Orange 1. 73.3112 Section 73.3112 Food... COLOR ADDITIVES EXEMPT FROM CERTIFICATION Medical Devices § 73.3112 C.I. Vat Orange 1. (a) Identity. The color additive is C.I. Vat Orange 1, Colour Index No. 59105. (b) Uses and restrictions. (1) The...

  18. Prediction models for performance and emissions of a dual fuel CI ...

    Indian Academy of Sciences (India)

    Piccolo (2001) used GA to energy flow management parameters of an hybrid electric vehicle, which uses electrical motor and internal combustion engine to give high efficiency and low emissions of the vehicle. The flow management parameters like highest desired battery state of charge, lowest desired battery state of ...

  19. Prediction models for performance and emissions of a dual fuel CI ...

    Indian Academy of Sciences (India)

    2016-08-26

    Aug 26, 2016 ... Dual fuel engines are being used these days to overcome shortage of fossil fuels and fulfill stringent exhaust gas emission regulations. They have several advantages over conventional diesel engines. In this context, this paper makes use of experimental results obtained from a dual fuel engine for ...

  20. Notas Para a Elucidação do Conceito de "Ciência"

    OpenAIRE

    Silva, Eduardo

    2011-01-01

    O presente escrito ("Notas para a Elucidação do Conceito de 'Ciência'") visa, como o seu próprio título indica, definir e elucidar o conceito de 'Ciência', bem como pôr em evidência quais são as relações conceptuais que subsistem entre a ciência e a filosofia e a própria ciência e a cultura (entendida esta sobretudo no sentido de 'mundividência').

  1. Uma visão comparada do ensino em ciência, tecnologia e sociedade na escola e em um museu de ciência

    Directory of Open Access Journals (Sweden)

    Guaracira Gouvêa

    2001-01-01

    Full Text Available Este trabalho apresenta a análise das narrativas de crianças e professores que se desenvolvem na sala de aula e em um museu de ciências, em situações de ensino-aprendizagem formal e não-formal. A pesquisa tratou das relações entre ensino formal (escola e não-formal (museu, focalizando indícios e práticas que envolvem, de um lado, o movimento CTS e, de outro, processos de alfabetização científica e tecnológica no ensino de ciências. Nas considerações finais, destacamos as contribuições da investigação para a melhoria do ensino de ciências.

  2. Da possibilidade de uma Teoria Pura da Ciência da Informação: reflexões iniciais entre a Ciência da Informação e a Ciência do Direito

    Directory of Open Access Journals (Sweden)

    Max Cirino de Mattos

    Full Text Available O artigo discute a fragilidade epistemológica da Ciência da Informação, a partir da adoção de um termo polissêmico, como objeto científico, e a similaridade dessa situação com o contexto da criação da Teoria Pura do Direito de Hans Kelsen. Após a apresentação de algumas definições sobre o objeto da Ciência da Informação, discutem-se alguns reflexos relacionados à identidade científica e à fundamentação teórica derivadas de um objeto polissêmico. Apresenta-se uma breve introdução à Teoria Pura do Direito e algumas reflexões sobre a possibilidade de uma Teoria Pura da Ciência da Informação.

  3. The MMN as a viable and objective marker of auditory development in CI users

    DEFF Research Database (Denmark)

    Näätänen, Risto; Petersen, Bjørn; Torppa, Ritva

    2017-01-01

    In the present article, we review the studies on the use of the mismatch negativity (MMN) as a tool for an objective assessment of cochlear-implant (CI) functioning after its implantation and as a function of time of CI use. The MMN indexes discrimination of different sound stimuli with a precision...

  4. Four routes to continuous improvement. An empirical typology of CI implementation processes

    NARCIS (Netherlands)

    Rijnders, Sander

    2002-01-01

    Continuous Improvement (CI) is a well-established concept that many companies adopt in some form. It is often suggested that CI's main problem lies in its implementation. Most of the literature is prescriptive or focuses on success and failure aspects. Until now, however, little is known about the

  5. Dyskusja wokół celu sprawozdawczości finansowej opartej na MSSF

    Directory of Open Access Journals (Sweden)

    Edyta Łazarowicz

    2016-07-01

    Full Text Available Celem artykułu jest analiza i ocena propozycji zmian odnośnie do celu sprawozdawczości finansowej opartej na Międzynarodowych Standardach Sprawozdawczości Finansowej (MSSF przedstawionych w komentarzach do projektu Założeń koncepcyjnych sprawozdawczości finansowej (2015. Większość respondentów uważa, że w celu sprawozdawczości finansowej należy zwiększyć znaczenie dostarczania informacji o wypełnieniu funkcji powierniczej przez kierownictwo (stewardship. Ponadto proponują oni przedstawienie definicji stewardship w Założeniach koncepcyjnych oraz wskazanie konsekwencji zmiany celu sprawozdawczości finansowej dla przyszłego tworzenia standardów i dla sporządzania sprawozdań finansowych. Z analizy komentarzy i przeglądu literatury wynika, że cel sprawozdawczości finansowej powinien być zmieniony. Sprawą dyskusyjną pozostaje jednak, czy stewardship powinien być odrębnym celem. Niestety, jest za mało badań dotyczących relacji pomiędzy stewardship i użytecznością decyzyjną. Ich wyniki mogłyby wskazać twórcom standardów rachunkowości potencjalne kompromisy i konflikty między nimi.

  6. A Tale of CI Build Failures : An Open Source and a Financial Organization Perspective

    NARCIS (Netherlands)

    Vassallo, Carmine; Schermann, Gerald; Zampetti, Fiorelli; Romano, Daniele; Leitner, Philipp; Zaidman, A.E.; Di Penta, Massimiliano; Panichella, Sebastiano

    2017-01-01

    Continuous Integration (CI) and Continuous Delivery (CD) are widespread in both industrial and open-source software (OSS) projects. Recent research characterized build failures in CI and identified factors potentially correlated to them. However, most observations and findings of previous work are

  7. The Contradiction Index (CI): A New Metric Combining System Complexity and Robustness for Early Design Stages

    DEFF Research Database (Denmark)

    Göhler, Simon Moritz; Howard, Thomas J.

    2015-01-01

    design iterations, a positive correlation was found. Furthermore, when correlating the CI against the number of challenging tolerances statistical significance was found (p=0.01). It is envisaged that the CI will be a powerful approach to estimate and compare development difficulty and to guide...... development and design improvements....

  8. Ciências Humanas e Sociais: ciências moles? A propósito do trabalho científico nesta contemporaneidade

    Directory of Open Access Journals (Sweden)

    Maria Adélia Aparecida de Souza

    2011-08-01

    Full Text Available Este ensaio busca atender uma velha e interminável discussão sobre uma questão que longe de ser científica é, sobretudo, política, qual seja a classificação das ciências. A Geografia tem oscilado nessas classificações: ora é uma ciência humana, social, ora é uma ciência da natureza. Este estímulo é o motivo principal da realização deste ensaio que, inspirado em uma interessante reflexão de Abraham Moles, prêmio Nobel de Matemática, quando sugere que reflitamos com seriedade científica e acadêmica sobre esse debate. Esse autor propõe corajosamente que as ciências humanas sejam elas sim consideradas “ciências duras”. Aqui é defendida a tese de que, dadas as características e dinâmicas do mundo do presente, as classificações carecem de um processo de discussão condizente com a essência do mundo de hoje, que reverte por vezes o conhecimento pré-estabelecido. Sugere-se, por exemplo, nesta perspectiva, que o espaço geográfico, por ser uma instância social, tal como a economia, a política e a cultura, seja considerado uma categoria social de análise e não um palco de realização da vida, como tem sido considerado pela geografia descritiva, completamente ultrapassada pela velocidade do mundo e pelos sistemas técnicos disponíveis.

  9. Effect of Inhomogeneous Mixture Properties on CI Combustion in a Schnurle-Type Gasoline DI Engine

    Science.gov (United States)

    Kim, Seok-Woo; Moriyoshi, Yasuo

    The authors have performed experiments on compression-ignition (CI) for a single-cylinder Schnurle-type two-stroke gasoline direct injection (DI) engine which employs a variable exhaust port, area, and deduced two presumptions from the experimental results. Firstly, the spatial distributions of fuel concentration and in-cylinder gas temperature are indispensable to enable CI operation under stratified charge conditions, because CI operation is not possible in a DI system although the necessary conditions of the scavenging efficiency and the in-cylinder gas temperature for the initiation of CI in homogeneous charge conditions are satisfied. Secondly, it is possible that flame propagation occurs in stratified charge CI conditions, because the combustion period in the later stage after 80% mass burned becomes longer than that with homogeneous charge CI combustion. In this report, in order to verify the above two presumptions deduced from experiments, the gas exchange process and mixture formation process were numerically analyzed, and the initiation conditions of CI were estimated using a CHEMKIN application. As a result, in case of CI with a late injection timing in DI system, it was found that CI was possible because high temperature but no fuel region and low temperature but rich fuel region exist in the cylinder due to inhomogeneous spatial distributions of fuel and temperature. Also, in case of CI with a late injection timing, the flame propagation was possible in the low-temperature and diluted rich region. Thereby, the two presumptions deduced from the experimental results were validated from the numerical analysis results.

  10. Multisensory emotion perception in congenitally, early, and late deaf CI users.

    Science.gov (United States)

    Fengler, Ineke; Nava, Elena; Villwock, Agnes K; Büchner, Andreas; Lenarz, Thomas; Röder, Brigitte

    2017-01-01

    Emotions are commonly recognized by combining auditory and visual signals (i.e., vocal and facial expressions). Yet it is unknown whether the ability to link emotional signals across modalities depends on early experience with audio-visual stimuli. In the present study, we investigated the role of auditory experience at different stages of development for auditory, visual, and multisensory emotion recognition abilities in three groups of adolescent and adult cochlear implant (CI) users. CI users had a different deafness onset and were compared to three groups of age- and gender-matched hearing control participants. We hypothesized that congenitally deaf (CD) but not early deaf (ED) and late deaf (LD) CI users would show reduced multisensory interactions and a higher visual dominance in emotion perception than their hearing controls. The CD (n = 7), ED (deafness onset: 3 years; n = 13) CI users and the control participants performed an emotion recognition task with auditory, visual, and audio-visual emotionally congruent and incongruent nonsense speech stimuli. In different blocks, participants judged either the vocal (Voice task) or the facial expressions (Face task). In the Voice task, all three CI groups performed overall less efficiently than their respective controls and experienced higher interference from incongruent facial information. Furthermore, the ED CI users benefitted more than their controls from congruent faces and the CD CI users showed an analogous trend. In the Face task, recognition efficiency of the CI users and controls did not differ. Our results suggest that CI users acquire multisensory interactions to some degree, even after congenital deafness. When judging affective prosody they appear impaired and more strongly biased by concurrent facial information than typically hearing individuals. We speculate that limitations inherent to the CI contribute to these group differences.

  11. Dylematy standaryzacjisprawozdawczości finansowej,wyceny i pomiaru ryzyka

    Directory of Open Access Journals (Sweden)

    Dorota Dobija

    2010-09-01

    Full Text Available W artykule zostały poruszone zagadnienia związane z istotą przejrzystości fi-nansowej organizacji. Przejrzystość ta jest jednym z elementów efektywnego systemu ładu korporacyjnego, dlatego tempo zmian w tym obszarze jest narzucone przez refor-my w systemach ładu korporacyjnego. W pierwszej części opracowania jest dyskuto-wana rola menedżerów w zapewnieniu przejrzystości finansowej organizacji. Kolejna część opracowania obejmuje krytyczną dyskusję trzech istotnych wątków teore-tycznych wpływających na jakość sprawozdawczości: postępującej standaryzacji w rachunkowości, problemów wyceny w rachunkowości oraz zagadnień pomiaru i sprawozdawczości ryzyka w organizacji.

  12. Complex coordinate rotation and relativistic Hylleraas-CI: helium isoelectronic series

    International Nuclear Information System (INIS)

    Pestka, G; Bylicki, M; Karwowski, J

    2007-01-01

    A combination of the Hylleraas-CI (Hy-CI) and complex coordinate rotation (CCR) methods has been applied to study the nuclear charge dependence of the eigenvalues of the Dirac-Coulomb (DC) Hamiltonian corresponding to the ground states of helium isoelectronic series atoms. It has been shown that the CCR, due to the separation of the localized states from the unphysical Brown-Ravenhall continuum, removes the instabilities of the bound-state eigenvalues observed in large-basis set Hy-CI results. The Hy-CI-CCR results are in very good agreement with the most accurate ones available in the literature. Surprisingly, the difference between the DC Hy-CI-CCR eigenvalues and the eigenvalues of the positive-energy projected no-pair Hamiltonian is equal, up to the numerical accuracy of the results, to (Zα) 3 /6π, i.e. to (Zα) 3 relativistic many-body perturbation theory contribution for electron-electron Coulomb interaction operator. An excellent agreement between the Hy-CI-CCR eigenvalues shifted by (Zα) 3 /6π and the no-pair ones confirms the very high accuracy achieved in both approaches. The numerical accuracy of the Hy-CI-CCR DC eigenvalues is estimated to eight significant figures

  13. W okowach etniczności? Wybrane partie etnoregionalne w Serbii i Chorwacji (1990–2012

    Directory of Open Access Journals (Sweden)

    Dominika Mikucka-Wójtowicz

    2014-12-01

    Full Text Available In the grip of ethnicity? The functioning of selected ethnoregionalist parties in Serbia and Croatia In the last twenty years we have been able to observe an increase in the significance of regional and ethnic identities (“reethnification”, and a resultant proliferation of ethnoregional and regional groupings. But although ethnoregionalist parties (ERP are widespread in both Western and Central and Eastern Europe, there remains surprisingly little literature differentiating between the various kinds of ethnoregionalist parties and dealing with the lack of common definition of this kind of political actors. Some scholars even propose using a broader term – ethnic party. Moreover, over the years many scholars have believed (and some continue to that their emergence in multicultural societies conjures up the politicisation of ethnic division and – practically inevitably – leads to “ethnic outbidding”, threatening to the stability of democracy. In the first part of the paper, the author deals with the conceptualisation of ethnoregionalist parties, examining the diversifications of their demands and strategies and showing that to gain voters they can invoke a much broader repertoire of strategies than the ethnic outbidding model suggested. The second part of the article is devoted to the problem of operation of selected ERPs in Serbia and Croatia. The analysis covers Hungarian parties in Serbia and Serbian ones in Croatia. In the concluding remarks, the author tries to point out the main reasons for the changes in their strategy (as well as demands over time.   W okowach etniczności? Wybrane partie etnoregionalne w Serbii i Chorwacji (1990–2012 Na przestrzeni ostatnich dwóch dekad możemy obserwować wyraźny wzrost znaczenia regionalnych i etnicznych tożsamości, prowadzący do powstawania coraz większej liczby ugrupowań etnoregionalnych i regionalnych. Mimo to – podobnie jak w przypadku wielu innych, istotnych i aktualnych

  14. Capturing the Petermann Ice Island Flux With the CI2D3 Database

    Science.gov (United States)

    Crawford, A. J.; Crocker, G.; Mueller, D.; Saper, R.; Desjardins, L.; Carrieres, T.

    2017-12-01

    The Petermann Glacier ice tongue lost >460 km2 of areal extent ( 38 Gt of mass) due to three large calving events in 2008, 2010 and 2012, as well as three previously unrecorded events in 2011 and 2012. Hundreds of ice islands subsequently drifted south between Hall Basin and Newfoundland's Grand Banks, but no systematic data collection or analysis has been conducted for the full flux of fragments prior to the present study. To accomplish this, the Canadian Ice Service's extensive RADARSAT-1 and -2 synthetic aperture radar image archive was mined to create the Canadian Ice Island Drift, Deterioration and Detection (CI2D3) Database. Over 15000 fragments have been digitized in GIS software from 3200 SAR scenes. A unique characteristic of the database is the inclusion of the lineage (i.e., connecting repeat observations or mother-daughter fragments) for all tracked fragments with areas >0.25 km2. This genealogical information was used to isolate ice islands that were about to fracture in order to assess the environmental conditions and morphological characteristics that influence this deterioration mechanism. Fracture counts showed a significant relationship with sea ice concentration (r = -0.56). However, variations in relative thickness played a large role in fracturing likelihood regardless of sea ice conditions. The exceedance probability of the daughter fragment length was calculated, as is often conducted for offshore industry hazard assessment. Grounded ice islands, which are hazards to seafloor installations and disturb benthic ecology, were recognized from their negligible drift speeds and two grounding hot-spots were identified along the Coburg and eastern Baffin island coasts. Petermann ice islands have been noted to drift along specific isobaths due to the influence of bathymetry on ocean currents. 50% of observations occurred between the 100 and 300 m isobaths, and smaller ice islands were observed more frequently in deeper regions. The CI2D3 Database can

  15. As atitudes dos alunos face às ciências da terra e da vida

    OpenAIRE

    Gonçalves, Anabela Maria Ventura

    2012-01-01

    O presente trabalho de investigação incidiu sobre o estudo das atitudes dos alunos face às Ciências da Terra e da Vida. A motivação que esteve na sua base foi a preocupação demonstrada por estudos nacionais e internacionais de que há cada vez menos alunos a optar pela área das ciências. Deste modo procurámos verificar se os alunos apresentam atitudes diferentes em dois níveis de ensino perante uma disciplina ou conteúdos, especificamente perante a disciplina de Ciências da Terra e da Vida....

  16. Analyzing nitrogen concentration using carrier illumination (CI) technology for DPN ultra-thin gate oxide

    International Nuclear Information System (INIS)

    Li, W.S.; Wu, Bill; Fan, Aki; Kuo, C.W.; Segovia, M.; Kek, H.A.

    2005-01-01

    Nitrogen concentration in the gate oxide plays a key role for 90 nm and below ULSI technology. Techniques like secondary ionization mass spectroscopy (SIMS) and X-ray photoelectron spectroscopy (XPS) are commonly used for understanding N concentration. This paper describes the application of the carrier illuminationTM (CI) technique to measure the nitrogen concentration in ultra-thin gate oxides. A set of ultra-thin gate oxide wafers with different DPN (decoupled plasma nitridation) treatment conditions were measured using the CI technique. The CI signal has excellent correlation with the N concentration as measured by XPS

  17. Polityka rachunkowości polskich fundacjiw świetle badań empirycznych

    Directory of Open Access Journals (Sweden)

    Anna Kamińska-Stańczak

    2010-04-01

    Full Text Available Fundacja, jak każdy podmiot rachunkowości, ma obowiązek posiadania własnego, indywidualnego systemu rachunkowości, podporządkowanego koncepcji wiernego i rzetelnego obrazu. W ramach organizacji tego systemu kierownik fundacji (zarząd ma obowiązek zatwierdzenia na piśmie stosownej dokumentacji, której rodzaje określa art. 10 ustawy o rachunkowości. W niniejszym artykule wskazano na konieczność posiadania przez fundację polityki rachunkowości i jej opisu zatwierdzonego na piśmie. Przedstawiono wyniki przepro-wadzonego badania ankietowego na temat kompletności dokumentacji przyjętych przez polskie fundacje zasad (polityki rachunkowości oraz stopnia trudności w jej sporządzeniu. Badanie wykazało, że 80% fundacji ma problemy z opracowaniem takiej dokumentacji i nie dostrzega się tu wyraźnego powiązania z jakąkolwiek cechą funda-cji (np. wiek, wielkość, rodzaj działalności. Braki w dokumentacji polityki rachunko-wości występują w 60% fundacji i najczęściej dotyczą opisu systemu ochrony danych (44% fundacji i przetwarzania danych (42% fundacji. Najbardziej niepokoi jednak brak opisu przyjętych metod wyceny aktywów i pasywów (29% fundacji oraz brak zakładowego planu kont (18% fundacji. Przeprowadzone badania ankietowe oraz analiza raportów pokontrolnych Najwyższej Izby Kontroli dowodzą, że nieprawidłowości w zakresie formułowania, dokumentowania i aktualizowania polityki rachunkowości istnieją w fundacjach od wielu lat. Rodzi to szereg obaw o stan rachunkowości w fundacjach, a także o jasność i rzetelność ich sprawozdań finansowych.

  18. Scyntygrafia kości w diagnostyce reumatoidalnego zapalenia stawów

    Directory of Open Access Journals (Sweden)

    Witold Tłustochowicz

    2010-04-01

    Full Text Available Celem pracy była ocena przydatności trójfazowej dynamicznejscyntygrafii kości w diagnostyce reumatoidalnego zapalenia stawów.Badaniem objęto 39 chorych hospitalizowanych i diagnozowanychz powodu dolegliwości stawowych. Przeprowadzono diagnostykęobejmującą: badanie podmiotowe, przedmiotowe, badania laboratoryjneoraz obrazowe, w tym trójfazową scyntygrafię kości z użyciemtechnetu 99m. Scyntygraficzne cechy zapalenia stawówstwierdzano, gdy obserwowano wzmożone gromadzenie znacznikawe wszystkich trzech fazach badania.Po ukończeniu diagnostyki rozpoznano u 13 chorych wczesne reumatoidalnezapalenie stawów, u 4 reumatoidalne zapalenie stawów(łącznie 17 pacjentów, a u 1 niezróżnicowane zapalenie stawów.Scyntygrafia kości wykazała cechy zapalenia stawów u 13spośród nich (72,2%, u 4 osób (22,2% wzmożone gromadzeniestwierdzono tylko w fazie statycznej, a u 1 pacjenta (5,6% uzyskanoprawidłowy wynik badania. U 21 chorych wykluczono chorobęzapalną stawów (u 19 rozpoznano fibromialgię, u 2 chorobęzwyrodnieniową. W grupie bez zapalenia stawów u 14 pacjentów(66,6% nie stwierdzono istotnych nieprawidłowości w obraziescyntygraficznym, u 6 (28,6% występowało wzmożone gromadzenieznacznika w badaniu statycznym, a u 1 chorego (4,8% opisanoscyntygraficzne cechy zapalenia stawów.Wbadanej grupie czułość scyntygrafii dynamicznej kości w wykrywaniuzapalenia stawów wynosiła 72,2% (95% CI: 57,5–76,8, a swoistość 95,2% (95% CI: 82,8–99,1. Dodatni wynik badaniadynamicznego wskazuje z dużym prawdopodobieństwem naobecność zapalenia stawów [PPV 92,9% (95% CI: 74,2–98,7].Mniej wiarygodny był ujemny wynik badania [NPV 80% (95% CI:69,5–83,3]. Wyniki niniejszej pracy wskazują, że trójfazowa scyntygrafia dynamicznakości może mieć zastosowanie w diagnostyce reumatoidalnegozapalenia stawów.

  19. FONSECA, Claudia; ROHDEN, Fabiola & MACHADO, Paula Sandrine (orgs.). 2012. Ciências na vida: antropologia da ciência em perspectiva

    OpenAIRE

    Castro, Rosana

    2018-01-01

    O livro Ciências na vida: antropologia da ciência em perspectiva, organizado por Claudia Fonseca, Fabiola Rohden e Paula Sandrine Machado, é resultante de seminário homônimo, realizado em agosto de 2011, na Universidade Federal do Rio Grande do Sul. Além de antropólogas(os) brasileiras(os), pesquisadoras(es) oriundos da França, da Inglaterra, da Alemanha, da Grécia e de Portugal assinam a autoria dos quatorze capítulos que compõem a coletânea, denotando, já de início, tanto a abrangência do i...

  20. Report on the effectiveness of flocculation for removal of 239Pu at concentrations of 1 pCi/L and 0.1 pCi/L

    International Nuclear Information System (INIS)

    Triay, I.R.; Bayhurst, G.K.; Mitchell, A.J.; Cisneros, M.R.; Efurd, D.W.; Roensch, F.R.; Rokop, D.J.; Aguilar, R.D.; Attrep, M.; Nuttall, H.E.

    1993-01-01

    The objective of this work is to assess the effectiveness of flocculation for the removal of Pu from Rocky Flats Plant (RFP) pond waters spiked with 239 Pu at the 1.0 and 0.1 pCi/L level. The flocculation treatment procedure is described in detail. Results are presented for treatment studies for the removal of Pu from C-2 pond water spiked with 239 Pu and from distilled water spiked with 239 Pu

  1. Quantitative detection of RO2 radicals and other products from cyclohexene ozonolysis with ammonium-CI3-TOF and acetate-CI-API-TOF

    Science.gov (United States)

    Hansel, A.; Scholz, W.; Mentler, B.; Fischer, L.; Berndt, T.

    2017-12-01

    The performance of the novel ammonium-CI3-TOF utilizing NH4+ adduct ion chemistry to measure quantitatively first generation oxidized product molecules (OMs) as well as highly oxidized organic molecules (HOMs) was investigated for the first time. The gas-phase ozonolysis of cyclohexene served as a test system in order to evaluate the capability of the detection systems. Experiments have been carried out in the TROPOS free-jet flow system at close to atmospheric conditions. Product ion signals were simultaneously observed by the ammonium-CI3-TOF and the acetate-CI-API-TOF. Both instruments are in remarkable good agreement within a factor of two for HOMs. For OMs not containing an OOH group the acetate technique can considerably underestimate OM concentrations by 2-3 orders of magnitude. First steps of cyclohexene ozonolysis generate ten different (m/z product peaks) main products comprising 92% of observed OMs. The remaining 8% are distributed over several (m/z peaks) minor products that can be attributed to HOMs, predominately to highly oxidized RO2 radicals. Summing up, observed ammonium-CI3-TOF products yield 4.9 x 109 molecules cm-³ in excellent agreement with the amount of reacted cyclohexene of 5.0 x 109 molecules cm-³ for reactant concentrations of [O3] = 2.25 x 1012 molecules cm-³ and [cyclohexene] = 2.0 x 1012 molecules cm-³ and a reaction time of 7.9 s. NH4+ adduct ion chemistry based CIMS techniques offer a unique opportunity for complete detection of the whole product distribution, and consequently, for a much better understanding of atmospheric oxidation processes.

  2. The Ciona intestinalis immune-related galectin genes (CiLgals-a and CiLgals-b) are expressed by the gastric epithelium.

    Science.gov (United States)

    Parrinello, Daniela; Sanfratello, Maria Antonietta; Vizzini, Aiti; Testasecca, Lelia; Parrinello, Nicolò; Cammarata, Matteo

    2017-03-01

    The transcription of two Ciona intestinalis galectin genes (CiLgals-a and CiLgals-b) is uparegulated by LPS in the pharynxis (hemocytes, vessel epithelium, endostilar zones) which is retained the main organ of the immunity. In this ascidian, for the first time we show, by immunohistochemistry and in situ hybridization methods, that these two immune-related genes are expressed in the gastric epithelium of naïve ascidians, whereas the galectins appear to be only contained in the intestine columnar epithelium. In addition, according to previous results on the pharynx, the genes are also expressed and galectins produced by hemocytes scattered in the connective tissue surrounding the gut. The genes expression and galectin localization in several tissues, including the previous findings on the transcription upregulation, the constitutive expression of these genes by endostylar zones and by the gastric epithelium suggest a potential multifunctional role of these galectins. In this respect, it is of interest to define where the CiLgals are normally found as related to the tissue functions. Such an approach should be a starting point for further investigations. Copyright © 2017 Elsevier Ltd. All rights reserved.

  3. Random comparison study of the clinical response to 153Sm-EDTMP 1.0 mCi/kg and 1.5 mCi/kg

    International Nuclear Information System (INIS)

    Pan, Z.; Zhu, S.

    2001-01-01

    Sixty-seven patient with painful bone metastases were randomized to two groups. Group 1 (n=34) received 1.0 mCi/kg of 153 Sm-EDTMP and group II (n=33) received 1.5 mCi/kg. All of them met inclusion criteria and there was no significantly difference between the basic conditions of two groups. After receiving 153 Sm-EDTMP intravenously, all patients were kept in close follow-up weekly with blood counting, physician visiting and collecting patient's self-filling-in diary including pain score, Karnofsky performance scale and analgesic consumption. The follow-up duration was six weeks. The final overall condition assessed by physician were graded into no change (including worse), slight relief, significant relief and complete relief. Only significant relief and complete relief were considered as effectiveness for pain relief. Haematological toxicity grade was evaluated based on the nadir of WBC ad PLT counts. The results indicated that the higher dosage group had a higher effectiveness rate (75.76%) compared to the lower dosage group (67.65%), but without statistic significance (x 2 =0.5365, 0.25 153 Sm-EDTMP could be used for those patients with better haematological function and 1.0 mCi/kg used for those patients with poorer haematological function. (author)

  4. Por que acredito na Ciência e por que acredito em Deus

    OpenAIRE

    Laszlo, Ervin

    2004-01-01

    Enquanto filósofo da Ciência e humanista, o autor afirmou acreditar na ciência e também em Deus, sem um sentido de conflito ou de contradição. Como é isto possivel? Interroga-se, afirmando que crescemos na convicção de que o conflito entre Ciência e Religião é definitivamente irremediável, o que não é hojeo caso. Embora seja exagerado invocar que as duas mundivisões da Ciência e da Religião, são iguais, estas não deixam de procurar a mesma conclusão fundamental acerca do mun...

  5. Classroom performance and language development of CI students placed in mainstream elementary school.

    NARCIS (Netherlands)

    Damen, G.W.J.A.; Langereis, M.C.; Snik, A.F.M.; Chute, P.M.; Mylanus, E.A.M.

    2007-01-01

    OBJECTIVE: Investigation of the relation between classroom performance and language development of cochlear implant (CI) students in mainstream education. Structural analyses of assessment of mainstream performance (AMP) and Screening Instrument For Targeting Educational Risk (SIFTER) instruments.

  6. AM1 CI and ZINDO/S study of quaternary salts of diazaphenanthrenes with haloalkanes

    Science.gov (United States)

    Peszke, Jerzy; Śliwa, Wanda

    2002-08-01

    For quaternary salts of diazaphenanthrenes 1- 3 with methyl iodide 4- 6, diiodomethane 7- 9 and 1,2-dibromoethane 10- 12 UV spectral values have been calculated by AM1 CI, and in the case of 4- 6 also with ZINDO/S method. Correlations of experimental and calculated wavenumber values of considered compounds show good compatibility. For geometry optimisation of 4- 9 the AM1 CI method has been used.

  7. Novos rumos para o laboratório escolar de ciências

    OpenAIRE

    Borges, Antônio Tarciso; UFMG - Minas Gerais

    2004-01-01

    Este trabalho discute o papel das atividades práticas no ensino de ciências e revê como o laboratório escolar de ciências tem sido usado. Discute os pressupostos sobre a natureza do conhecimento que suportam esses usos e os equívocos a que conduzem. Descreve algumas alternativas potencialmente mais relevantes e pedagogicamente interessantes que temos estudado, em contraste com os tipos de atividades fortemente estruturadas tradicionalmente utilizadas pelos professores. Em...

  8. Novos rumos para o laboratório escolar de ciências

    OpenAIRE

    Borges, Antônio Tarciso; UFMG - Minas Gerais

    2002-01-01

    Este trabalho discute o papel das atividades práticas no ensino de ciências e revê como o laboratório escolar de ciências tem sido usado. Discute os pressupostos sobre a natureza do conhecimento que suportam esses usos e os equívocos a que conduzem. Descreve algumas alternativas potencialmente mais relevantes e pedagogicamente interessantes que temos estudado, em contraste com os tipos de atividades fortemente estruturadas tradicionalmente utilizadas pelos professores. Em...

  9. Luz, arte, ciência... ação! Lights, art, science - action!

    Directory of Open Access Journals (Sweden)

    Thelma Lopes

    2005-01-01

    Full Text Available O principal objetivo do presente artigo é refletir sobre as principais interações entre teatro, ciência e tecnologia, ao longo da história do teatro, e discutir, a partir de nossa experiência no Ciência em Cena, espaço integrante do Museu da Vida, de que modos essas interações podem estar presentes no cotidiano de um museu de ciências. A palavra 'ciência' deve ser compreendida aqui em sentido amplo, englobando não apenas as ciências naturais, mas também as ciências humanas, assim como a palavra 'tecnologia' deve ser associada à ciência aplicada. Arte e ciência serão entendidas como processos criativos, como formas de representação do mundo e expressão do conhecimento humano.The article offers some reflections on the main interactions between theater, science, and technology down through the history of theater. Based on our experience at "Science in the Spotlight", part of the Casa de Oswaldo Cruz's Museum of Life, we discuss how these interactions can be part of a science museum's daily activities. We use the word 'science' in its broad sense, encompassing not only the natural but human sciences as well; likewise, we use the word 'technology' as it relates to applied science. Art and science are understood here as creative processes, as ways of representing the world and expressing human knowledge.

  10. Semiempirical UNO-CAS and UNO-CI: method and applications in nanoelectronics.

    Science.gov (United States)

    Dral, Pavlo O; Clark, Timothy

    2011-10-20

    Unrestricted Natural Orbital-Complete Active Space Configuration Interaction, abbreviated as UNO-CAS, has been implemented for NDDO-based semiempirical molecular-orbital (MO) theory. A computationally more economic technique, UNO-CIS, in which we use a configuration interaction (CI) calculation with only single excitations (CIS) to calculate excited states, has also been implemented and tested. The class of techniques in which unrestricted natural orbitals (UNOs) are used as the reference for CI calculations is denoted UNO-CI. Semiempirical UNO-CI gives good results for the optical band gaps of organic semiconductors such as polyynes and polyacenes, which are promising materials for nanoelectronics. The results of these semiempirical UNO-CI techniques are generally in better agreement with experiment than those obtained with the corresponding conventional semiempirical CI methods and comparable to or better than those obtained with far more computationally expensive methods such as time-dependent density-functional theory. We also show that symmetry breaking in semiempirical UHF calculations is very useful for predicting the diradical character of organic compounds in the singlet spin state.

  11. Transforming growth factor β (CiTGF-β) gene expression is induced in the inflammatory reaction of Ciona intestinalis.

    Science.gov (United States)

    Vizzini, Aiti; Di Falco, Felicia; Parrinello, Daniela; Sanfratello, Maria Antonietta; Cammarata, Matteo

    2016-02-01

    Transforming growth factor (TGF-β) is a well-known component of a regulatory cytokines superfamily that has pleiotropic functions in a broad range of cell types and is involved, in vertebrates, in numerous physiological and pathological processes. In the current study, we report on Ciona intestinalis molecular characterisation and expression of a transforming growth factor β homologue (CiTGF-β). The gene organisation, phylogenetic tree and modelling supported the close relationship with the mammalian TGF suggesting that the C. intestinalis TGF-β gene shares a common ancestor in the chordate lineages. Functionally, real-time PCR analysis showed that CiTGF-β was transcriptionally upregulated in the inflammatory process induced by LPS inoculation, suggesting that is involved in the first phase and significant in the secondary phase of the inflammatory response in which cell differentiation occurs. In situ hybridisation assays revealed that the genes transcription was upregulated in the pharynx, the main organ of the ascidian immune system, and expressed by cluster of hemocytes inside the pharynx vessels. These data supported the view that CiTGF-β is a potential molecule in immune defence systems against bacterial infection. Copyright © 2015 Elsevier Ltd. All rights reserved.

  12. Rytų baltų CiR tipo veiksmažodžiai

    Directory of Open Access Journals (Sweden)

    Dalia Pakalniškienė

    2011-12-01

    Full Text Available EASTERN BALTIC CiR TYPE VERBSSummaryThis article analyzes CiR type verbs in the Eastern Baltic languages and attempts to explain their origin and evolution. The criterion for inclusion as a subject for investigation – the root structure – allows for the discovery of general patterns in the history of verbs of the given structural type and the development of these verbs in the separate Baltic languages, and can provide a better definition of archaic features and innovations, because the root structure is closely related to the morphological structure and categorial semantics (especially in the Lithuanian language.According to various sources, there are approximately 30 CiR type verbs common to the Eastern Baltic languages (there are more in the Lithuanian language.In regard to morphological structure these are rather varied: a-stem, ia-stem, infix and sta-stem (the morphological structure also depends on the root final element: Cin are a-stem, Cir, Cil ia-stem or sto-stem, Cim are sta-stem.l. The largest group consists of infix and sta-stem verbs (15.1.1. The majority of these form diathetic pairs with ia-stem verbs (10. The categorial semantics of infix and sta-stem verbs – the mutative meaning – is opposed to the causative meaning of ia-stem verbs, e.g. Lith. bẽria / bỹra : Latv. ber̦u / bir̃stu. This opposition has not been documented in the Old Prussian language.1.2. Several of the verbs preserve Indo-European roots (5, but differ in morphological structure, these being infix and sta-stems or crossovers from a-stems, e.g.: Lith. mìršta : Latv. mir̃stu, Lith. gìmsta // gẽma : Latv. dzìmstu // dzemu.2. Only half as many ia-stem CiR type verbs have been discovered (7, e.g. Lith. skìria – skýrė : Latv. šķir̦u – šķîru.3. Eight Eastern Baltic a-stem verbs have CiR type roots.3.1. Mostly a-stem verbs with quantitative vowel changes were identified (6. In the Latvian language the preterite may occur without

  13. Ciąża i poród u chorych na stwardnienie rozsiane

    Directory of Open Access Journals (Sweden)

    Małgorzata Czernichowska-Kotiuszko

    2014-04-01

    Full Text Available Stwardnienie rozsiane (łac. sclerosis multiplex, SM jest główną przyczyną niepełnosprawności u młodych dorosłych i jak większość chorób autoimmunologicznych częściej dotyczy kobiet. Wpływ ciąży na przebieg SM wzbudza zainteresowanie od wielu lat, a w ostatnim okresie stanowi temat badań wieloośrodkowych. Ciąża to zwykle okres bardzo dobrego samopoczucia chorych, najczęściej bez rzutów. Wynika to ze zmiany reaktywności immunologicznej na korzyść reakcji przeciwzapalnych związanych z limfocytami Th2 i cytokinami antyzapalnymi (interleukina 4, 5, 6, 10, TGF-β. Po porodzie zmienia się reaktywność immunologiczna i aktywność choroby wzrasta. Większość badań nie wykazała ogólnego negatywnego wpływu ciąży na niesprawność długoterminową związaną z SM; stwardnienie rozsiane nie ma negatywnego wpływu na przebieg ciąży, porodu i stan dziecka, dlatego chore kobiety mogą planować potomstwo. Choroba nie zwiększa ryzyka powikłań w ciąży i podczas porodu ani wad wrodzonych u dziecka w porównaniu z populacją ogólną. Jednakże każda terapia immunomodulująca jest przeciwwskazana w ciąży. Jeśli pacjentka decyduje się na dziecko, powinna przerwać leczenie; zaleca się również przerwę od leków przed zajściem w ciążę. W pracy podsumowano dostępne informacje na temat klinicznych problemów dotyczących ciąży i porodu u chorych na SM oraz oceniono zagrożenia dla dziecka związane z podawaniem leków.

  14. Konflikt rosyjsko-ukraiński w świadomości społeczności pochodzenia polskiego obwodu tarnopolskiego

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    Marcelina Michalina Jakimowicz

    2015-12-01

    Full Text Available The Russia – Ukraine conflict – awareness of people of Polish descent living in Tarnopol region The aim of  this article is to show the Influence of the revolution - Euromaidan and Russian-Ukrainian conflict started from 2013 on the consciousness and identity of people of Polish descent  living in Ternopil Region of western Ukraine. The society of the Ternopil circuit  developed new strategies of social life, adapt to the situation of conflict of defining ourselves as citizens of Ukraine - Country at War. The article contains a brief outline of the events associated with Euromaidan, annexation of the Crimea and fighting separatists in the Donbass region. Based on interviews and observations, the autor shows the awareness  of Polish descert  of a Russian-Ukrainian conflict, describes the emotions associated with the war and its consequences for the respondents. The text is also about  important issue various performances of "foreign" in the narratives of the conflict: Russian, separatist, a resident of eastern Ukraine.   Konflikt rosyjsko-ukraiński w świadomości społeczności pochodzenia polskiego obwodu tarnopolskiego Celem artykułu jest ukazanie wpływu rewolucji – Euromajdanu i konfliktu rosyjsko-ukraińskiego rozpoczętego od 2013 roku na świadomość i opinie ludności pochodzenia polskiego zamieszkałej w zachodniej Ukrainie, na terenie obwodu tarnopolskiego. Tekst zawiera krótki zarys wydarzeń związanych z Euromajdanem, aneksją Krymu i walkami separatystów w rejonie Donbasu. Autorka bazując na rozmowach i obserwacji ukazuje świadomość ludności pochodzenia polskiego o charakterze konfliktu rosyjsko-ukraińskiego, emocje związane z wojną i jej wpływem na życie rozmówców. Tekst podejmuje także ważną kwestię różnych przedstawień „obcego” w narracjach o konflikcie: Rosjanina, separatysty, mieszkańca wschodniej Ukrainy.

  15. Cloning and characterization of a surface antigen CiSA-32.6 from Cryptocaryon irritans.

    Science.gov (United States)

    Huang, Xiaohong; Sun, Zhiyu; Guo, Guowei; Zheng, Changfeng; Xu, Yang; Yuan, Liping; Liu, Cheng

    2012-03-01

    Cryptocaryon irritans is a ciliated parasite causing cryptocaryosis in marine fish. To isolate functional genes, a cDNA library of C. irritans trophonts was constructed and a gene designated CiSA-32.6 (GenBank ID: JF812643) was cloned and characterized. The full-length cDNA (1158 bp) encoded a deduced polypeptide of 330 amino-acid (aa) with a signal peptide of 22 aa. To express the ciliate gene, a truncated open reading frame (CiSA-32.6t) was synthesized to remove fragments encoding the signal peptide and hydrophobic C-terminal and to modify non-universal genetic codes. CiSA-32.6t was subcloned into Escherichia coli DH5α strain using the pGEX-4T-1 vector and then expressed as a glutathione S transferase fusion protein (rCiSA-32.6t). Western blotting analysis showed that sera from mice immunized with rCiSA-32.6t reacted specifically with a native protein (32.6 kDa) in parasite lysates. Moreover, rCiSA-32.6t reacted specifically with sera from mice immunized with a C. irritans trophont lysate. Expression of the CiSA-32.6 gene in C. irritans was detected at all developmental stages by reverse transcriptase PCR and Western blotting analysis. This study provides the basis of further investigations into the pathogenic biology of C. irritans and the control of cryptocaryosis. Copyright © 2012 Elsevier Inc. All rights reserved.

  16. Identyfikacja wielokryterialnego modelu istotności pompowni melioracyjnych na terenie Polski

    Directory of Open Access Journals (Sweden)

    Wojciech Sałabun

    2015-09-01

    Full Text Available Niniejsza praca omawia istotny problem związany z klasyfikacją i właściwym zdefiniowaniem wielkości pompowni melioracyjnych. Podstawowa definicja wielkości jest bardzo szeroka, zatem ze względu na liczbę objaśniających ją parametrów wymaga precyzyjnego uściślenia. W dotychczasowych ocenach rozmiarów pompowni melioracyjnych posługiwano się na ogół wrażeniami osobistymi opartymi na subiektywnym odczuciu, które z kolei jest oparte na nieznanej liczbie parametrów. Pojawiające się przy tym trudności z określeniem przynależności obiektów do danej grupy wielkości wynikały głównie z luk informacyjnych dotyczących właściwej granicy podziału pomiędzy poszczególnymi grupami. W niniejszej pracy, do klasyfikacji i podziału pompowni według ich wielkości zastosowano takie ich parametry jak: moc nominalna pompowni P w kW, wydajność całkowita Q w m3 · s oraz zasięg oddziaływania pompowni Fp w ha, dla 270 losowo wybranych obiektów melioracyjnych w Polsce. Do rozwiązania problemu wykorzystano jedną z wielokryterialnych metod podejmowania decyzji (MCDM, opartą na mechanizmach logiki rozmytej, noszącą nazwę metody obiektów charakterystycznych (COMET.

  17. 40 CFR 60.4210 - What are my compliance requirements if I am a stationary CI internal combustion engine manufacturer?

    Science.gov (United States)

    2010-07-01

    ... I am a stationary CI internal combustion engine manufacturer? 60.4210 Section 60.4210 Protection of... CI internal combustion engine manufacturer? (a) Stationary CI internal combustion engine... certified to the standards in 40 CFR part 1039. (b) Stationary CI internal combustion engine manufacturers...

  18. ANALIZA MOŻLIWOŚCI ZASTOSOWANIA ODPADOWEGO PYŁU BAZALTOWEGO W ZAPRAWIE CEMENTOWEJ

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    Magdalena DOBISZEWSKA

    2016-07-01

    Full Text Available Rosnące zapotrzebowanie na surowce naturalne do produkcji materiałów budowlanych, spowodowało intensyfikację badań dotyczących możliwości wykorzystania w produkcji budowlanej materiałów odpadowych. Powszechnie, jako dodatek mineralny do cementu stosowany jest granulowany żużel wielkopiecowy, popiół lotny, czy też pył krzemionkowy. Podczas obróbki kruszywa stosowanego do produkcji mas mineralno-asfaltowych (MMA powstają duże ilości odpadów pylastych. Utylizacja tych odpadów stanowi obecnie duży problem w wielu wytwórniach MMA. W pracy dokonano analizy możliwości zastosowania odpadowego pyłu bazaltowego do produkcji zaprawy cementowej. Najpierw zbadano właściwości fizyczne i chemiczne zastosowanego pyłu bazaltowego. Celem określenia wpływu dodatku pyłu bazaltowego na niektóre właściwości zapraw przygotowano cztery mieszanki, w których pył bazaltowy stanowił częściowy zamiennik piasku w ilości 0-30% masy piasku. Badania doświadczalne dotyczyły analizy wpływu pyłu na wytrzymałość zapraw na ściskanie i zginanie po 2, 28 i 56 dniach dojrzewania próbek, mrozoodporności, nasiąkliwość oraz zdolności do kapilarnego podciągania wody. Następnie przeprowadzono badania dotyczące wpływu dodatku pyłu bazaltowego na mikrostrukturę oraz porowatość zaprawy. Wyniki przeprowadzonych badań wskazują na to, że pył bazaltowy może być stosowany do produkcji zapraw cementowych, jako substytut piasku naturalnego. Zastąpienie części piasku w zaprawie cementowej przez pył bazaltowy pozwoli na zagospodarowanie odpadu przemysłowego oraz wpłynie na poprawę niektórych cech zaprawy cementowej.

  19. A convergência da educação ambiental, sustentabilidade, ciência, tecnologia e sociedade (CTS e ambiente (CTSA no ensino de ciências

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    Jacinta Lourdes Weber Bourscheid

    2014-07-01

    Full Text Available A sociedade contemporânea sofre uma grande influência das tecnologias o que nos faz refletir sobre as necessidades educacionais atuais e a ação que exerce sobre/no Ensino de Ciências. Na análise inicial, a década de cinquenta, com a origem da Educação Ambiental e a relação do homem com o ambiente natural, qualidade de vida e sustentabilidade. O tema CTS e CTSA surge como possibilidade de diálogo para a questão ambiental, tecnológica, econômica e sociocultural, para articular nos sistemas educacionais, os conteúdos científicos com o contexto social, desenvolvendo a atitude crítica frente à sociedade, mostrando a ciência e a tecnologia como atividades humanas de relevância social, que permeia a cultura e está presente no cotidiano.

  20. Bioética e ensino de ciências: o tratamento de temas controversos - dificuldades apresentadas por futuros professores de ciências e de biologia

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    Paulo Fraga da Silva

    2013-01-01

    Full Text Available O presente estudo tem como objetivo analisar como os licenciandos lidam com temas controversos que poderiam ser discutidos com seus futuros alunos, sobretudo a metodologia a ser utilizada em sala de aula. O percurso metodológico consistiu na aplicação e análise de um questionário com questões abertas, relacionadas a quatro casos com conteúdos dilemáticos aplicados a 32 licenciandos de Ciências e Biologia, pertencentes a três Instituições de Ensino Superior do município de São Paulo. Os dados apontaram que os licenciandos conseguem perceber conflitos éticos nos casos, porém não explicitam as estratégias de como abordá-los. Para os licenciandos, o professor tem um papel central, como expositor dos temas. Assim, a formação inicial pouco tem contribuído na instrumentalização dos futuros professores no exercício de tomada de posição e o convívio com a divergência. Destaca-se a importância da Bioética na socialização do debate científico e como um valioso instrumento metodológico no ensino de Ciências.

  1. Isenção da ciência, neutralidade da análise

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    Daniel Menezes Coelho

    2012-01-01

    Full Text Available O artigo discute as relações entre a psicanálise e a ciência, especialmente no que tange aos seus métodos de investigação e trabalho. Para isso, tomamos como objeto a noção de neutralidade, tal como podemos apreendê-la na clínica da psicanálise, para confrontá-la com o que chamamos de isenção no campo da ciência, que não quer dizer outra coisa que a neutralidade proposta lá. Veremos que, apesar da clara filiação da noção psicanalítica para com a noção vinda da ciência, a neutralidade clínica da psicanálise toma outro rumo, que se pode mesmo opor ao sentido do termo na ciência. Enquanto em ciência o termo quer significar um processo de purificação e de seleção, em psicanálise ele surge como a exigência de nada selecionar.

  2. FABRICO/CIÊNCIA: Um Ambiente Linked Data para o Mapeamento da Ciência

    Directory of Open Access Journals (Sweden)

    Rafael Port da Rocha

    2012-12-01

    Full Text Available Este trabalho investiga contribuições de Arquivos Abertos, Web 2.0 e Linked Data para o Mapeamento da Ciência. Apresenta o ambiente Fabrico/Ciência, que combina características de Arquivos Abertos, Web 2.0 e Linked Data. Descreve e analisa as características de Fabrico/Ciência em função dos passos que envolvem o processo de analise do mapeamento da ciência e das vantagens obtidas pela exploração de recursos de Arquivos Abertos, Web 2.0 e Linked Data. Conclui que a ferramenta apresenta um ambiente para pesquisas no mapeamento da Ciência, em especial no que diz respeito à colheita, representação, integração e interligação de metadados; produção e preparação coletiva de dados; e exploração de redes e similaridades. Identifica como pesquisa o desenvolvimento de uma ontologia, para representar no ambiente recursos bibliográficos, de citação e de redes.

  3. The Relation between Nonverbal IQ and Postoperative CI Outcomes in Cochlear Implant Users: Preliminary Result

    Directory of Open Access Journals (Sweden)

    Mina Park

    2015-01-01

    Full Text Available Objectives. This study assessed the correlation between performance intelligence and the postoperative cochlear implant (CI outcome in Korean-speaking children. In addition, the relationship between the performance intelligence subscales and the post-CI speech outcome was evaluated. Materials and Methods. Thirteen pediatric CI users (five males, eight females; median age at implantation 6.2 (range 1.3–14.2 years; median age at intelligence test 9.3 (range 5–16 years who were tested using the Korean Educational Development Institute-Wechsler Intelligence Scale for children were studied. The correlations between the intelligence scores and 1-2 years postoperative Categories of Auditory Performance (CAP scores and between subscales of performance and 1-2 years postoperative CAP scores were analyzed. Results. There was no correlation between the categories of verbal intelligence quotient (IQ and performance IQ for “mentally retarded” and “average,” respectively (Spearman’s rho = 0.42, P=0.15. There was a strong correlation between performance IQ and the postoperative CAP scale (Spearman’s rho = 0.8977, P=0.0008. “Picture arrangement” and “picture completion,” reflecting social cognition, were strongly correlated with the postoperative CAP scales. Conclusion. Performance intelligence, especially social cognition, was strongly related to the postoperative CI outcome of cochlear implant users. Therefore, auditory rehabilitation, including social rehabilitation, should maximize the postoperative CI outcomes.

  4. AHRQ series on complex intervention systematic reviews-paper 7: PRISMA-CI elaboration and explanation.

    Science.gov (United States)

    Guise, Jeanne-Marie; Butler, Mary; Chang, Christine; Viswanathan, Meera; Pigott, Terri; Tugwell, Peter

    2017-10-01

    Complex interventions are widely used in health care, public health, education, criminology, social work, business, and welfare. They have increasingly become the subject of systematic reviews and are challenging to effectively report. The Complex Interventions Methods Workgroup developed an extension to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Complex Interventions (PRISMA-CI). Following the EQUATOR Network guidance for Preferred Reporting Items for Systematic Reviews and Meta-Analysis extensions, this Explanation and Elaboration (EE) document accompanies the PRISMA-CI checklist to promote consistency in reporting of systematic reviews of complex interventions. The EE document explains the meaning and rationale for each unique PRISMA-CI checklist item and provides examples to assist systematic review authors in operationalizing PRISMA-CI guidance. The Complex Interventions Workgroup developed PRISMA-CI as an important start toward increased consistency in reporting of systematic reviews of complex interventions. Because the field is rapidly expanding, the Complex Interventions Methods Workgroup plans to re-evaluate periodically for the need to add increasing specificity and examples as the field matures. Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.

  5. Ciências Humanas e Sociais: ciências moles? A propósito do trabalho científico nesta contemporaneidade

    Directory of Open Access Journals (Sweden)

    Maria Adélia Aparecida de Souza

    2011-07-01

    Full Text Available Este ensaio busca atender uma velha e interminável discussão sobre uma questão que longe de ser científica é, sobretudo, política, qual seja a classificação das ciências. A Geografia tem oscilado nessas classificações: ora é uma ciência humana, social, ora é uma ciência da natureza. Este estímulo é o motivo principal da realização deste ensaio que, inspirado em uma interessante reflexão de Abraham Moles, prêmio Nobel de Matemática, quando sugere que reflitamos com seriedade científica e acadêmica sobre esse debate. Esse autor propõe corajosamente que as ciências humanas sejam elas sim consideradas “ciências duras”. Aqui é defendida a tese de que, dadas as características e dinâmicas do mundo do presente, as classificações carecem de um processo de discussão condizente com a essência do mundo de hoje, que reverte por vezes o conhecimento pré-estabelecido. Sugere-se, por exemplo, nesta perspectiva, que o espaço geográfico, por ser uma instância social, tal como a economia, a política e a cultura, seja considerado uma categoria social de análise e não um palco de realização da vida, como tem sido considerado pela geografia descritiva, completamente ultrapassada pela velocidade do mundo e pelos sistemas técnicos disponíveis. Resumé SCIENCES HUMAINES ET SOCIALES: SCIENCES "MOLLES"? A PROPOS DU TRAVAIL SCIENTIFIQUE DANS LA CONTEMRAINETÉ Ce teste cherche à participer d´une interminable discussion sur question du classement des sciences. Catte discussion, loin d'être scientifique ou académique est uni discussion politique. Une source d'inspiration de cette reflexion a été I'oeuvre de Abraham Moles, Prix Nobel de Mathématique. Eant la Géographie une science que parfois est classée comme science de la nature, parfois comme science humaine et sociale. Catte discussion a inspirée aussi cet article. II attire I' ATTENTION SUR LA necessité, pour cette de prendre en consideration les

  6. A ciência como rede de atores: ressonâncias filosóficas

    OpenAIRE

    Moraes,Marcia

    2004-01-01

    O objetivo deste artigo é analisar as conseqüências filosóficas da teoria ator-rede para os estudos acerca das ciências. Esta teoria tem renovado o debate em torno das ciências, por enfatizar a investigação da ciência em ação, isto é, tal como ela é praticada nos laboratórios de pesquisa. Os conceitos de sujeito e objeto, bem como aqueles de veracidade, racionalidade e fato científico são redefinidos com base neste enfoque teórico. Também são analisadas as possíveis alianças entre a teoria at...

  7. K2 Reveals Pulsed Accretion Driven by the 2 Myr Old Hot Jupiter CI Tau b

    Science.gov (United States)

    Biddle, Lauren I.; Johns-Krull, Christopher M.; Llama, Joe; Prato, Lisa; Skiff, Brian A.

    2018-02-01

    CI Tau is a young (∼2 Myr) classical T Tauri star located in the Taurus star-forming region. Radial velocity observations indicate it hosts a Jupiter-sized planet with an orbital period of approximately 9 days. In this work, we analyze time series of CI Tau’s photometric variability as seen by K2. The light curve reveals the stellar rotation period to be ∼6.6 days. Although there is no evidence that CI Tau b transits the host star, a ∼9 day signature is also present in the light curve. We believe this is most likely caused by planet–disk interactions that perturb the accretion flow onto the star, resulting in a periodic modulation of the brightness with the ∼9 day period of the planet’s orbit.

  8. Seria a Metafísica Essencial à Ciência e ao Senso Comum?

    Directory of Open Access Journals (Sweden)

    Rafael Sandoval

    2017-02-01

    Full Text Available Uma das declarações mais consensuais da História da Filosofia é a que diz que a Metafísica não é ciência, mas pensamento. Neste artigo, procurar-se-á defender a tese que a Metafísica é condição para o senso comum e a ciência. Primeiro, é mostrado que os termos ao qual nós utilizamos diariamente refletem nossa imagem de mundo. Quando pensamos e fazemos previsões, fazemos o uso espontâneo de termos com significado universal. Depois, é procurado evidenciar que a ciência naturalmente faz uso de termos com significado universal quando faz previsões. Finalmente, buscará apresentar que a Metafísica é anterior às nossas hipóteses e especulações.

  9. Popularização da ciência: uma revisão conceitual

    OpenAIRE

    Germano, Marcelo Gomes; UEPB - Paraíba; Kulesza, Wojciech Andrzej; UFPB - João Pessoa - PB

    2008-01-01

    Desenvolvido em quatro momentos, objetivamos com este trabalho estabelecer uma melhor aproximação do conceito de popularização da ciência. Para tanto, procederemos a uma revisão conceitual que nos permita reconhecer diferenças e semelhanças entre os termos: vulgarização da ciência, divulgação científica, alfabetização científica, e popularização da ciência, inadvertidamente utilizados como sinônimos de uma mesma prática. Procuramos ainda, fundamentados na produção teórica em Educação Popular,...

  10. Pomiar wiarygodności internetowych serwisów handlowych.

    OpenAIRE

    Garnik, Igor; Basińska, Beata

    2011-01-01

    Rozwój handlu internetowego jest odpowiedzią na zapotrzebowanie klientów na tę formę dystrybucji towarów i usług. Z tego powodu, zarządzanie witryną sklepu internetowego, w celu zwiększenia jej wiarygodności, a co za tym idzie – konkurencyjności, jest ważnym zadaniem stojącym przed podmiotami prowadzącymi działalność gospodarczą w sieci. Celem niniejszej pracy było zaproponowanie nowej metody oceny wiarygodności serwisów WWW. Badanie przeprowadzono w grupie 225 osób (83% doświadczonych i 17% ...

  11. APPLICATION OF ACROBATIC EXEerCI SES IN A HANDBALL TRAINING PROCESS

    Directory of Open Access Journals (Sweden)

    Radojica Marušić

    2007-05-01

    Full Text Available Ac ro bat exer ci ses re pre sent a ba se for ac qu i ring com plex hand ball exer ci sing techni qu es. Hand ball players get to know dif fe rent types of mo ving and put ting in mo tion dif fe rent parts of body. They ma ster the ba sic com po nents – di rec tion, speed, am pli tu de, in ten sity of ne u ro mu scu lar ten sion, and at the sa me ti me they le arn how to di rect the ir mo tion pre ci sely and how to co or di na te the ir mo ves in spa ce and ti me.

  12. Prefácio a "Ciência : 4000 anos de história"

    OpenAIRE

    Fiolhais, Carlos

    2013-01-01

    Patricia Fara foge ao estereotipo usual de considerar a ciência uma criação ocidental, segundo o qual a ciência surgiu com a Revolução Científica. Escolhe-se convencionalmente a data de 1543, quando o astrónomo polaco Nicolau Copérnico publicou em Nuremberga a sua Revolução dos Orbes Celestes e o médico belga Andreas Vesalius fez sair em Basileia a sua Fábrica do Corpo Humano. Mas, para Fara, a ciência confunde-se com conhecimento do mundo, sendo óbvio que este começou muito antes de ter surg...

  13. Esophagogastric junction contractile integral (EGJ-CI) quantifies changes in EGJ barrier function with surgical intervention.

    Science.gov (United States)

    Wang, D; Patel, A; Mello, M; Shriver, A; Gyawali, C P

    2016-05-01

    Esophagogastric junction contractile integral (EGJ-CI) assesses EGJ barrier function on esophageal high resolution manometry (HRM). We assessed EGJ-CI values in achalasia and gastroesophageal reflux disease (GERD) to determine if postoperative EGJ-CI changes reflected surgical intervention. Twenty-one achalasia patients (42.8 ± 3.2 years, 62% F) with HRM before and after Heller myotomy (HM) and 68 GERD patients (53.9 ± 1.8 years, 66% F) undergoing antireflux surgery (ARS) were compared to 21 healthy controls (27.6 ± 0.6 years, 52% F). Esophagogastric junction contractile integral (mmHg.cm) was calculated using the distal contractile integral measurement across the EGJ, measured above the gastric baseline and corrected for respiration. Pre and postsurgical EGJ-CI and conventional lower esophageal sphincter pressure (LESP) metrics were compared within and between these groups using non-parametric tests. Correlation between EGJ-CI and conventional LESP metrics was assessed. Baseline EGJ-CI was higher in achalasia compared to GERD (p integral declined by 59.2% after HM in achalasia (p = 0.001), and increased by 26.3% after ARS in GERD (p = 0.005). End-expiratory and basal LESP decreased by 74.5% and 64.5% with HM, but increased by only 17.8% and 4.3% with ARS. Differences were noted between Dor vs Toupet fundoplication in achalasia (p = 0.007), and partial vs complete ARS in GERD (p = 0.03). Esophagogastric junction contractile integral correlated modestly with both end-expiratory and basal LESP (Pearson's r of 0.8 for all), but was less robust in GERD (0.7). Esophagogastric junction contractile integral has clinical utility in assessing EGJ barrier function at baseline and after surgical intervention to the EGJ, and could complement conventional EGJ metrics. © 2016 John Wiley & Sons Ltd.

  14. Contribuições para o estudo do ciúme excessivo

    OpenAIRE

    Andrea Lorena da Costa

    2010-01-01

    O ciúme romântico é um complexo de pensamentos, emoções e ações que visam proteger o relacionamento diante de uma ameaça percebida real ou imaginária e tem como objetivo eliminar os riscos da perda do objeto de amor. O ciúme excessivo (patológico) é uma preocupação infundada, irracional e irreal, composto de diversas emoções e pensamentos que provocam prejuízos significativos no funcionamento pessoal e relacional. O objetivo deste trabalho foi explorar a presença de transtornos psiquiátrico...

  15. Psicologia Social como Ciência e Prática: O que Pensam Pesquisadores Brasileiros?

    OpenAIRE

    Gouveia,Valdiney Veloso

    2015-01-01

    RESUMO O objetivo deste estudo foi conhecer como pesquisadores da Psicologia Social brasileira a concebem, considerando a dicotomia ciência-prática. Participaram 100 representantes de grupos de pesquisa dessa disciplina. Estes responderam questionário online com cinco partes: concepções da psicologia social, representantes da área, periódicos de referência, atitudes frente à disciplina como ciência aplicada e básica e informações demográficas. A psicologia social foi concebida como sócio-hist...

  16. The Addition of EI/CI Capability to the Mattauch-herzog Spectrograph with EOID

    Science.gov (United States)

    Fergusson, G. J.; Koslin, M. E.

    1979-01-01

    A modification was made to the Mattauch-Herzog Spectrograph with an electro-optical ion detector (EOID) previously designed and constructed, so that it would be capable of operating not only in the electron-impact (EI) mode of ionization, but also in the chemical ionization (CI) mode. This modification necessitated an effort in three specific design areas: (1) sample inlet; (2) ion source and analyzer regions; and (3) the pumping system. In addition, an appropriate electronics package had to be designed to control and operate the combined EI/CI source.

  17. A História e o Ensino da Ciência

    Directory of Open Access Journals (Sweden)

    José Reis

    1967-03-01

    Full Text Available Só me abalancei a aceitar o convite para esta palestra, num ambiente de historiadores, porque, embora sabendo que nada direi de nôvo, acredito que não seja desprezível a convicção, a que cheguei, da importância da História no ensino da Ciência e do papel coordenador, que os professôres de História podem desempenhar, tanto das ciências como das humanidades.

  18. Combustion Characteristics of CI Diesel Engine Fuelled With Blends of Jatropha Oil Biodiesel

    Science.gov (United States)

    Singh, Manpreet; Yunus Sheikh, Mohd.; Singh, Dharmendra; Nageswara rao, P.

    2018-03-01

    Jatropha Curcas oil is a non-edible oil which is used for Jatropha biodiesel (JBD) production. Jatropha biodiesel is produced using transesterification technique and it is used as an alternative fuel in CI diesel engine without any hardware modification. Jatropha biodiesel is used in CI diesel engine with various volumetric concentrations (blends) such as JBD5, JBD15, JBD25, JBD35 and JBD45. The combustion parameters such as in-cylinder pressure, rate of pressure rise, net heat release, cumulative heat release, mass fraction burned are analyzed and compared for all blends combustion data with mineral diesel fuel (D100).

  19. A inclusão na perspectiva do novo paradigma da ciência

    Directory of Open Access Journals (Sweden)

    Reinoldo Marqueza

    2011-12-01

    Full Text Available O estudo aborda o processo de transição paradigmática da ciência moderna para a ciência pós-moderna. Salienta as características do paradigma atual, a crise desse paradigma e aponta os contornos do paradigma emergente na perspectiva do sociólogo Boaventura Sousa Santos. Refere a Educação Inclusiva como um novo processo de produção e de apropriação do conhecimento e como uma nova forma de estar na relação.Palavras-chave: Paradigma. Conhecimento. Educação Inclusiva.

  20. α- i β- fluorowane aminofosfoniany – synteza oraz właściwości

    OpenAIRE

    Kaźmierczak, Marcin

    2014-01-01

    Wydział Chemii Chemia fluorowanych aminofosfonianów jest stosunkowo nowym obszarem badań, intensywnie rozwijanym na przestrzeni ostatnich trzech dekad. Unikatowe właściwości fluorowanych aminofosfonianów spowodowały, iż wiele z tych związków wykazuje aktywności przeciwnowotworowe, przeciwbakteryjne, przeciwwirusowe, owadobójcze czy przeciwgrzybicze. Także ich pochodne ‒ fluorowane kwasy aminofosfonowe znalazły zastosowanie jako inhibitory wielu enzymów. Celem niniejszej pracy było oprac...

  1. Dzieło sztuki na granicy przeszłości i przyszłości. Historia i patriotyzm w sztuce nieprofesjonalnej

    Directory of Open Access Journals (Sweden)

    Aleksandra Weronika Jarysz

    2016-01-01

    Full Text Available A work of art – a link between the present and the past. History and patriotism in non-professional art In her article, the author discusses art of non-professional artists who shape the national identity in an original way. In the former professional art, the works which illustrated and uplifted history were very popular. This phenomenon is still present among folk, naive, intuitive artists, generally speaking – non-professionals. The work of their hands and imagination is a tool serving the purpose of national values and ideas, and is sometimes the basis for broader considerations on the human condition. They balance between historical facts and ahistorical generalities. The martyrdom of the Polish nation with emphasis on the events of WWII has been inspiring artists, stimulating their imagination and artistic creation. Therefore numerous ‘monuments of patriotic art’ can be found in the wood sculpture, ceramics, painting, and glass painting works from the art collection of the Toruń Maria Znamierowska-Prüfferowa Ethnographic Museum.   Dzieło sztuki na granicy przeszłości i przyszłości. Historia i patriotyzm w sztuce nieprofesjonalnej W swoim artykule autorka prezentuje sztukę twórców nieprofesjonalnych, którzy w sposób oryginalny kształtują tożsamość narodową. W dawnej sztuce profesjonalnej dzieła, które ilustrowały i uwznioślały historię były bardzo popularne. To zjawisko jest nadal aktualne wśród twórców ludowych, naiwnych, intuicyjnych, ogólnie nazywając – nieprofesjonalnych. Dzieło ich rąk i wyobraźni jest narzędziem w służbie wartości i idei narodowych, a niekiedy stanowi podstawę do szerszych rozważań nad kondycją człowieka. Balansują oni między konkretem historycznym a ahistoryczną ogólnością. Martyrologia narodu polskiego z naciskiem na wydarzenia II wojny światowej inspirowała i inspiruje twórców, pobudza ich wyobraźnię i zmusza do twórczej kreacji. Stąd też zar

  2. A mutation in Myo15 leads to Usher-like symptoms in LEW/Ztm-ci2 rats.

    Directory of Open Access Journals (Sweden)

    Nadine Held

    Full Text Available The LEW/Ztm-ci2 rat is an animal model for syndromal deafness that arose from a spontaneous mutation. Homozygous animals show locomotor abnormalities like lateralized circling behavior. Additionally, an impaired vision can be observed in some animals through behavioral studies. Syndromal deafness as well as retinal degeneration are features of the Usher syndrome in humans. In the present study, the mutation was identified as a base substitution (T->C in exon 56 of Myo15, leading to an amino acid exchange from leucine (Leu to proline (Pro within the carboxy-terminal MyTH4 domain in the proteins' tail region. Myo15 mRNA was expressed in the retina as demonstrated for the first time with the help of in-situ hybridization and PCR. To characterize the visual phenotype, rats were examined by scotopic and photopic electroretinography and, additionally, histological analyses of the retinas were conducted. The complete loss of sight was detected along with a severe degeneration of photoreceptor cells. Interestingly, the manifestation of the disease does not solely depend on the mutation, but also on environmental factors. Since the LEW/Ztm-ci2 rat features the entire range of symptoms of the human Usher syndrome we think that this strain is an appropriate model for this disease. Our findings display that mutations in binding domains of myosin XV do not only cause non-syndromic hearing loss but can also lead to syndromic disorders including retinal dysfunction.

  3. Projeto Caminhão da Ciência: Popularização da Ciência no Oeste da Bahia

    Directory of Open Access Journals (Sweden)

    E. C. V. de Magalhães

    2014-11-01

    Full Text Available O Projeto Caminhão da Ciência tem por objetivo promover a divulgação científica em Escolas e espaços públicos da Região Oeste da Bahia. O projeto teve início no ano de 2009, com apoio do CNPq, ocorrendo a sua primeira apresentação no ano de 2010, na feira libre de Barreiras. Várias áreas do conhecimento são contempladas entre eles: Biologia, Física, Química, Matemática, Geologia e Engenharias. O projeto se fundamenta por apresentações de temáticas desenvolvidas por alunos de graduação, sob a orientação de professores da Universidade Federal do Oeste da Bahia-UFOB, envolvidos no projeto. Diversas temáticas são desenvolvidas na forma trabalhos interdisciplinares entre eles: elaboração de maquetes, experimentos com uso de materiais alternativos, vídeos, jogos e ainda informativos em websites e webblogs. Para as apresentações do projeto, são realizadas visitas nas escolas ou outros espaçoes e os materiais trasportados no Caminhão são montados no espaço físico disponibilizado, criando um cenário similar ao de uma feira de ciências. Neste trabalho são apresentados relatos de apresentações realizadas em Escolas, enfatizando os resultados obtidos que demonstram a socialização do conhecimento científico entre os monitores e a comunidade assistida, além da interação entre a Universidade e a sociedade.

  4. Regulation of notochord-specific expression of Ci-Bra downstream genes in Ciona intestinalis embryos.

    Science.gov (United States)

    Takahashi, Hiroki; Hotta, Kohji; Takagi, Chiyo; Ueno, Naoto; Satoh, Nori; Shoguchi, Eiichi

    2010-02-01

    Brachyury, a T-box transcription factor, is expressed in ascidian embryos exclusively in primordial notochord cells and plays a pivotal role in differentiation of notochord cells. Previously, we identified approximately 450 genes downstream of Ciona intestinalis Brachyury (Ci-Bra), and characterized the expression profiles of 45 of these in differentiating notochord cells. In this study, we looked for cisregulatory sequences in minimal enhancers of 20 Ci-Bra downstream genes by electroporating region within approximately 3 kb upstream of each gene fused with lacZ. Eight of the 20 reporters were expressed in notochord cells. The minimal enchancer for each of these eight genes was narrowed to a region approximately 0.5-1.0-kb long. We also explored the genome-wide and coordinate regulation of 43 Ci-Bra-downstream genes. When we determined their chromosomal localization, it became evident that they are not clustered in a given region of the genome, but rather distributed evenly over 13 of the 14 pairs of chromosomes, suggesting that gene clustering does not contribute to coordinate control of the Ci-Bra downstream gene expression. Our results might provide Insights Into the molecular mechanisms underlying notochord formation in chordates.

  5. Vowel hiatus resolution in ciNsenga: An Optimality Theory analysis ...

    African Journals Online (AJOL)

    This article examines patterns of vowel hiatus resolution in ciNsenga, using Optimality Theory (OT). We present a formal analysis of the morphosyntatic and phonological contexts in which potential vowel hiatus occurs and the strategies that are utilised to resolve it. In this language, hiatus resolution is a function of whether ...

  6. Ci2: Competencias Informáticas e Informacionales para la Educación Superior

    OpenAIRE

    González-Fernández-Villavicencio, Nieves

    2009-01-01

    Information literacy is today one of the most important skills to manage information properly, also to digital naives, young people that think they are literacies because they use technology. Training in information literacy and media literacy is one of the most important roles for the librarian in collaboration with academic professor. Ci2 is the junction of information and computers literacy, in Spanish.

  7. Visualization and prediction of porosity in roller compacted ribbonswith near infrared chemical imaging (NIR-CI)

    DEFF Research Database (Denmark)

    Khorasani, Milad Rouhi; Amigo Rubio, Jose Manuel; Sonnergaard, Jørn

    2015-01-01

    reference methods that ribbons compressed at a higher pressure resulted in a lower mean porosity. Using NIR-CI in combination with multivariate data analysis it was possible to visualize and predict the porosity distribution of the ribbons. This approach is considered important for process monitoring...... and control of continuously operating roller compaction line....

  8. Magnetic Dimer Excitations in Cs3Cr2CI9 Studied by Neutron Scattering

    DEFF Research Database (Denmark)

    Leuenberger, Bruno; Güdel, Hans U.; Kjems, Jørgen

    1985-01-01

    The energy dispersion of the singlet-triplet dimer excitation in Cs3Cr2CI9h as been studied by inelastic neutron scattering (INS) at temperatures down to 1.3 K. The results can be accounted for by using a completely isotropic Heisenberg Hamiltonian in the random phase approximation (RPA). Only...

  9. CI+MBPT calculations of Ar I energies, g factors, and transition line strengths

    Science.gov (United States)

    Savukov, I. M.

    2018-03-01

    Excited states of noble gas atoms present certain challenges to atomic theory for several reasons: first, relativistic effects are important and LS coupling is not optimal; second, energy intervals can be quite small, leading to strong mixing of states; third, many-body perturbation theory for hole states does not converge well. Previously, some attempts were made to solve this problem, using for example the all-order coupled-cluster approach and particle-hole configuration-interaction many-body perturbation theory (CI-MBPT) with modified denominators. However, while these approaches were promising, the accuracy was still limited. In this paper, we calculate Ar I energies, g factors, and transition amplitudes using ab initio CI-MBPT with eight valence electrons to avoid the problem of slow convergence of MBPT due to strong interaction between 3p and 3s states. We also included in CI many dominant states obtained by double excitations of the ground state configuration. Thus perturbation corrections were needed only for 1s, 2s, 2p core electrons non-included in valence-valence CI, which are quite small. We found that energy, g factors, and electric dipole matrix elements are in reasonable agreement with experiments. It is noteworthy that the theory agreed well with accurately measured g factors. Experimental oscillator strengths have large uncertainty, so in some cases we made a comparison with average values.

  10. 10 CFR 709.3 - Covered persons subject to a CI evaluation and polygraph.

    Science.gov (United States)

    2010-01-01

    ... and function of nuclear weapons use control systems, features, and their components (currently designated as Sigma 15); vulnerability of nuclear weapons to deliberate unauthorized nuclear detonation... 10 Energy 4 2010-01-01 2010-01-01 false Covered persons subject to a CI evaluation and polygraph...

  11. Verb agreement and the syntax of ciNsenga relative clauses ...

    African Journals Online (AJOL)

    Relativisation of a non-subject NP in ciNsenga (Bantu) results in the inversion of the subject nd the appearance on the verb of a prefix which agrees with the relativised noun. Recent studies on Bantu relative constructions (for example, Demuth & Harford, 1999; Ngonyani, 999; 2001) have shown that subject inversion results ...

  12. Comparing vowel hiatus resolution in ciNsenga and chiShona: An ...

    African Journals Online (AJOL)

    This article seeks to contribute to typology by presenting a formal comparative analysis of repair strategies used to resolve vowel hiatus in ciNsenga and chiShona. In these two languages, hiatus resolution is sensitive to phonology and morphosyntax such that hiatus resolution strategies apply differently depending on the ...

  13. Ciências da Religião numa sociedade multicultural

    Directory of Open Access Journals (Sweden)

    Wolfgang Gruen

    2009-05-01

    Full Text Available Texto originalmente apresentado como aula inaugural do Programa de Pós-graduação em Ciências da Religião da PUC Minas. Trata da epistemologia e dos desafios da investigação em Ciências da Religião. Partindo do problema de base da religiosidade na Educação, do fenômeno religioso e sua dimensão profunda, o artigo segue uma densa investigação sobre os limites e horizontes das Ciências da Religião.Palavras-chave: Ciências da Religião; Religião; Religiosidade; Educação; Ensino religioso.ABSTRACTThis text was originally presented as the opening class of the Postgraduate Programme in Sciences of Religion of PUC Minas. It concerns the epistemology and challenges of investigation in Sciences of Religion. Starting from the fundamental question of religiosity in Education, of the religious phenomenon and its deep dimension, the article embarks on a close investigation into the limits and horizons of the Sciences of Religion.Key words: Sciences of religions; Religion; Religiosity; Education; Religious teaching.

  14. O ensino de ciências sob o enfoque da educação ambiental

    OpenAIRE

    Gobara, Shirley Takeco; Aydos, Maria Celina Recena; Santos, José Carlos Chaves dos; Prado, Cynthia P. A.; Galhardo, Edvaldo Pereira

    1992-01-01

    Este artigo apresenta uma proposta curricular para o ensino de Ciências para nível fundamental (5ª série), com ênfase em Educação Ambiental, desenvolvida a partir da concepção educacional de Paulo Freire.

  15. School performance and wellbeing of children with CI in different communicative-educational environments

    NARCIS (Netherlands)

    Langereis, M.C.; Vermeulen, A.M.

    2015-01-01

    OBJECTIVES: This study aimed to evaluate the long term effects of CI on auditory, language, educational and social-emotional development of deaf children in different educational-communicative settings. METHODS: The outcomes of 58 children with profound hearing loss and normal non-verbal cognition,

  16. Support for Reviving the ERNWACA-CI during the Post-Election ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    To address the crisis's adverse effects on education and research, efforts are currently being made by the government and university authorities to rehabilitate the ... and Central Africa in Côte d'Ivoire (ERNWACA-CI) is undertaking this project to rebuild its scientific and technical resources and revive scientific and research ...

  17. Combustion Homogeneity and Emission Analysis during the Transition from CI to HCCI for FACE I Gasoline

    KAUST Repository

    Vedharaj, S.

    2017-10-10

    Low temperature combustion concepts are studied recently to simultaneously reduce NOX and soot emissions. Optical studies are performed to study gasoline PPC in CI engines to investigate in-cylinder combustion and stratification. It is imperative to perform emission measurements and interpret the results with combustion images. In this work, we attempt to investigate this during the transition from CI to HCCI mode for FACE I gasoline (RON = 70) and its surrogate, PRF70. The experiments are performed in a single cylinder optical engine that runs at a speed of 1200 rpm. Considering the safety of engine, testing was done at lower IMEP (3 bar) and combustion is visualized using a high-speed camera through a window in the bottom of the bowl. From the engine experiments, it is clear that intake air temperature requirement is different at various combustion modes to maintain the same combustion phasing. While a fixed intake air temperature is required at HCCI condition, it varies at PPC and CI conditions between FACE I gasoline and PRF70. Three zones are identified 1) SOI = -180 to -80 CAD (aTDC) is HCCI zone 2) SOI = -40 to -20 CAD (aTDC) is PPC zone 3) After SOI = -15 CAD (aTDC) is CI zone. Combustion duration, ignition delay, start of combustion and CA90 (crank angle at which 90% of fuel burnt) are comparable between FACE I gasoline and PRF70. The combustion images show a prominent soot flame at CI condition, while only blue coloured premixed flames are visible at PPC condition for both the fuels. PRF70 seems to have a pronounced premixed effect when compared to FACE I gasoline at early injections, showing a decreased level of stratification. NOX emission and soot concentration decreases from CI condition and attains a constant zero value at HCCI condition for both FACE I gasoline and PRF70. CO and CO2 emissions matches between FACE I gasoline and PRF70 at PPC and CI condition, while CO emission is lower for PRF70 at HCCI condition.

  18. Przyczynek do postrzegania struktury współczesnego systemu rachunkowości

    Directory of Open Access Journals (Sweden)

    Irena Sobańska

    2018-03-01

    Full Text Available Głównym celem artykułu jest objaśnienie procesu ewoluowania elementów systemu rachunkowości organizacji gospodarczej pod wpływem zmian zachodzących w różnicach informacji oczekiwanych przez odbiorców wewnętrznych i zewnętrznych. Dla zrealizowania tego celu przedstawiono zamęt regu- lacyjny w obszarze rachunkowości i jego skutki dla rozwoju systemów rachunkowości w praktyce w Polsce oraz przeanalizowano zmiany w potrzebach informacyjnych interesariuszy w kontekście wprowadzanych zmian w sprawozdaniach finansowych, zintegrowanych raportach biznesowych i zmian w stosowanych metodach rachunkowości zarządczej w organizacjach społecznie odpowiedzialnych. Następnie przedsta- wiona została autorska propozycja nowej struktury systemu rachunkowości odpowiadająca jego współczesnej funkcjonalności w warunkach obecnego poziomu rozwoju globalizacji, zmierzającego w kierun- ku zrównoważonej gospodarki oraz szereg wniosków ogólnych wynikających z przedstawionych rozwa- żań. W propozycji nowej struktury przyjęto, że system rachunkowości organizacji społecznie odpowie- dzialnej powinien być zbudowany z podsystemu rachunkowości biznesowej, emitującego zintegrowany raport biznesowy (sprawozdanie finansowe + raporty niefinansowe i wewnętrzne raporty dla zarządu oraz podsystemu rachunkowości podatkowej, emitującego informacje dla agend podatkowych. W opra- cowaniu artykułu zastosowano analizę treści i opinii autorów wybranych publikacji, metodę analizy dokumentów oraz wiedzę uzyskaną metodą obserwacji bezpośredniej i wyniki badań empirycznych innych autorów. The main goal of the article is to explain the process of evolution of the organization's accounting system elements as a result of changes taking place in information expected by internal and external users. To achieve this goal, regulatory uncertainties in the area of accounting and their consequences for the devel- opment of accounting systems in

  19. O modelo de Karl Popper sob a ótica das Ciências Sociais Aplicadas

    Directory of Open Access Journals (Sweden)

    Milton de Abreu Campanario

    2012-04-01

    Full Text Available DOI: http://dx.doi.org/10.5007/2175-8077.2012v14n32p124 Karl Popper é o principal filósofo da ciência na modernidade, disputando com Thomas Kuhn a primazia de interpretação do método científico. Claramente há diferentes visões para uma leitura desse importante autor que cunhou o método chamado de dedutivo com teste. O texto reconhece a relevância da visão de Karl Popperno desenvolvimento de trabalhos científicos das ciências exatas e biológicas, onde é amplamente aceita. No entanto, nota-se que essa formulação é pouco sistematizada na área das ciências sociais aplicadas. Este é um ensaio que busca resgatar a sua contribuição, numa tentativa de traduzir os conceitos por ele desenvolvidos de forma didática. Para tanto, será feita uma introdução aos fundamentos da ciência como forma específica de conhecimento, buscando contrastar os métodos dedutivo e indutivo e os procedimentos da ciência formal, básica e aplicada. Uma tentativa de classificar a formulação de proposições a serem testadas ou falseadas é feita com a utilização de diferentes critérios, utilizando exemplos da administração e da economia para ilustração.

  20. Observational Approach to Molecular Cloud Evolution with the Submillimeter CI Lines

    Science.gov (United States)

    Oka, T.; Yamamoto, S.; Mt. Fuji Submillimeter-Wave Telescope Group

    Neutral carbon atoms (CI) play important role both in chemistry and cooling processes of interstellar molecular clouds. It is thus crucial to explore its large area distribution to investigate formation processes and thermal balance of molecular clouds. We have constructed a 1.2 m submillimeter-wave telescope at the summit of Mt.Fuji. The telescope was designed for the exclusive use of surveying molecular clouds in two submillimeter CI lines, 3P1--3P0 (492 GHz) and 3P2--3P1 (809 GHz), of atomic carbon. It has been operated successfully during 4 observing seasons since July 1998 in a remote way from the Hongo campus of the University of Tokyo. We have already revealed large-scale CI 492 GHz distributions of many giant molecular clouds, including Orion MC, Taurus MC, DR15, DR21, NGC2264, M17, W3, W44, W51, Rosette MC, covering more than 40 square degrees of the sky. The distribution of CI 492 GHz emission is found to be different from those of the 13CO or C18O emission in some clouds. We found the spatial order of C+/CO/C from UV sources. This is the general property of the cloud illuminated by intense UV radiation, whereas it is apparently inconsistent with the standard photodissociation region (PDR) picture. We also found CI-rich areas (C/CO˜1) in several dark clouds without strong UV sources. These results are discussed in relation to formation processes of molecular clouds and dense cloud cores.

  1. Observational Approach to Molecular Cloud Evolutation with the Submillimeter-Wave CI Lines

    Science.gov (United States)

    Oka, T.; Yamamoto, S.

    Neutral carbon atoms (CI) play important roles both in chemistry and cooling processes of interstellar molecular clouds. It is thus crucial to explore its large area distribution to obtain information on formation processes and thermal balance of molecular clouds. However, observations of the submillimeter-wave CI lines have been limited to small areas around some representative objects. We have constructed a 1.2 m submillimeter-wave telescope at the summit of Mt.Fuji. The telescope was designed for the exclusive use of surveying molecular clouds in two submillimeter-wave CI lines, 3 P1 -3 P0 (492GHz) and 3 P2 -3 P1 (809 GHz), of atomic carbon. A superconductor-insulator-superconductor (SIS) mixer receiver was equipped on the Nasmyth focus of the telescope. The receiver noise temperatures [Trx(DSB)] are 300 K and 1000 K for the 492 GHz and the 809 GHz mixers, respectively. The intermediate frequency is centered at 2 GHz, having a 700 MHz bandwidth. An acousto-optical spectrometer (AOS) with 1024 channel outputs is used as a receiver backend. The telescope was installed at Nishi-yasugawara (alt. 3725 m), which is 200 m north of the highest peak, Kengamine (3776 m), in July 1998. It has b en operatede successfully during 4 observing seasons in a remote way from the Hongo campus of the University of Tokyo. We have already observed more than 40 square degrees of the sky with the CI 492 GHz line. The distribution of CI emission is found to be different from those of the 13 CO or C1 8 O emission in some clouds. These differences are discussed in relation to formation processes of molecular clouds.

  2. Ocena możliwości implementacji standardów IPSAS do systemu rachunkowości podmiotów sektora publicznego w Polsce

    Directory of Open Access Journals (Sweden)

    Aleksandra Szewieczek

    2017-09-01

    Full Text Available Ocena możliwości implementacji standardów IPSAS do systemu rachunkowości podmiotów sektora publicznego w Polsce In recent years, there has been a noticeable increase in activity in the field of standardization of public sector accounting, which has an international scope and takes the form of the International Public Sector Accounting Standards (IPSAS. It has been planned that the EU Member States, and consequently Poland, will implement obligatory uniform accounting standards in the public sector – EPSAS – which are to be largely based on the content of IPSAS. The purpose of this paper is to assess the possibilities and factors of IPSAS implementation in the accounting system of public finance sector entities in Poland in relation to the currently applicable accounting regulations and the intelligibility criterion for potential users. The assessment was carried out based on a study of the foreign and domestic literature and existing legislation, while for the conclusions, the deductive and synthetic methods were used. The paper demonstrates that despite the relatively long period of operation of IPSAS, their level of implementation into the accounting system of public sector entities in Poland is negligible. The same applies to the works on the European standards, EPSAS, which have been significantly delayed in relation to the original assumptions. Knowledge of international standards is weak, and consequently their dissemination too. In spite of IPSAS implementation problems, there are still a number of reasons for their use. One of the arguments in favor of introducing uniform standards on the European market is the fact that the common market is in operation, and another one is the strong embedding of the need to consolidate the public sector’s international financial data at the central level of the Community. The conducted research confirmed the possibility of implementing IPSAS into Polish public sector entities’ accounting

  3. Entre "artes" e "ciências": a noção de performance e drama no campo das ciências socias

    Directory of Open Access Journals (Sweden)

    Rubens Alves da Silva

    2005-12-01

    Full Text Available Propõe-se neste artigo desenvolver uma reflexão teórica que está relacionada com as preocupações e propostas da área de estudos antropológicos das formas expressivas, focalizando, centralmente, a noção de performance e drama no campo das ciências sociais. Nesse sentido é que se busca, no momento, dialogar com os autores considerados representantes principais da discussão teórica em torno da noção de performance, drama e ritual no campo antropológico: Victor Turner, Clifford Geertz, Michael Taussig, Richard Schechner, John Dawsey - entre outros.This article attempts to develop a theoretical reflection on the aims and proposals in the area of the anthropological studies about the expressive forms, dealing with the concept of performance and drama in the social sciences. Taking this into consideration, this work intends to discuss the ideas of the most important authors in the theoretical debate concerning the concept of performance, drama and ritual in the anthropological field: Victor Turner, Clifford Geertz, Michael Taussig, Richard Schechner, John Dawsey - and others.

  4. Masculinidade e ciúme na perspectiva da teoria da sedução generalizada

    OpenAIRE

    Ribeiro, Paulo Carvalho

    2012-01-01

    Partindo das contribuições freudianas sobre as relações do ciúme com a projeção e a homossexualidade, propõe-se no presente artigo uma retomada do papel do masoquismo primário e da identificação feminina como elementos definidores do ciúme masculino patológico. As condições originárias de constituição do psiquismo, vistas sob o ângulo da Teoria da Sedução Generalizada, proposta por Jean Laplanche, são relacionadas tanto ao masoquismo primário quanto à identificação feminina. A situação assimé...

  5. Znaczenie parametru number needed to treat w ocenie skuteczności terapii

    Directory of Open Access Journals (Sweden)

    Andrzej Potemkowski

    2016-12-01

    Full Text Available Badania kliniczne dostarczają lekarzowi praktykowi nazbyt wielu danych, na których podstawie musi on porównać metody leczenia i wybrać tę potencjalnie najkorzystniejszą dla danego pacjenta. Za jedną z użytecznych miar oceny rezultatów terapii uznano number needed to treat – NNT. Parametr ten określa liczbę osób, które należy poddać jednej interwencji zamiast drugiej, aby zaobserwować różnicę w skuteczności uzyskiwania pożądanego wyniku w określonym horyzoncie czasowym. NNT jest pochodną bezwzględnej zmiany ryzyka lub ryzyka wyjściowego i jego zmiany względnej; obrazuje względną przewagę danego sposobu leczenia. NNT służy przede wszystkim do porównywania wad i zalet alternatywnych interwencji, a ocena tego wskaźnika jest ważna w szacowaniu wartości klinicznej istotnych statystycznie wyników badań klinicznych. Zastosowanie NNT pomaga przewidzieć efekt leczenia pod względem zarówno skuteczności, jak i tolerancji. Ponadto wyniki badań klinicznych przedstawione w formie NNT można przekazać chorym, ich rodzinom oraz instytucjom decydującym o dostępności konkretnego leku. W stwardnieniu rozsianym wyniki badań klinicznych dotyczyły wpływu leków na zmniejszenie rocznego wskaźnika rzutów i redukcję zmian w obrazach rezonansu magnetycznego oraz zahamowania progresji niepełnosprawności. W analizach leków pierwszej linii wartości NNT odniesione do przeciwdziałania rzutom, progresji niepełnosprawności i zmianom w rezonansie magnetycznym istotnie się różnią. Podobne różnice występują w przypadku wartości NNT dla leków drugiej linii czy obecnie wprowadzanych leków doustnych. Dane te pokazują, że w ocenie wyników badań klinicznych nie należy brać pod uwagę jedynie wybranych wskaźników – trzeba analizować je wszystkie w sposób konstruktywnie krytyczny. Podkreśla się także znaczenie NNT jako przejrzystego parametru, który może być wykorzystywany

  6. Österreichische Literatur in der Zeitschrift Wiadomości Literackie in der Zwischenkriegszeit

    Directory of Open Access Journals (Sweden)

    Hurnikowa Elżbieta

    2016-06-01

    Full Text Available The article is devoted to reception of Austrian literature before the Second World War in Wiadomości Literackie (Literary News. It was the most popular letter, whose aim was to educate society, and popularize foreign literature and culture. The literature that was most often promoted was French literature, but also German-speaking authors (cited in the article were discussed. Austrian literature was not treated as distinct from German literature during that time but nontheless, the articles presents artists, of Austrian origin: Joseph Roth, Stefan Zweig, Rainer Maria Rilke, Hugo von Hofmannsthal, Arthur Schnitzler, Odon von Horváth, Franz Werfel and others. The article examines interviews with these writers as well as reviews their books and other texts which appeared in Wiadomości Literackie.

  7. A Ciência da Lógica: Uma leitura Estrutural

    Directory of Open Access Journals (Sweden)

    Marco Aurélio de Medeiros Jordão

    2017-02-01

    Full Text Available O presente artigo tem como objetivo fazer uma análise introdutória da obra Ciência da Lógica de Hegel. Pretendemos prosseguir com uma leitura mais estrutural do texto, analisando os argumentos e expondo a sua tecedura. Portanto, não problematizaremos o texto de Hegel a partir de outros autores ou tentaremos atualizar seu pensamento, nos prenderemos ao texto e a ele nos remeteremos. Para tal propósito nos debruçaremos na introdução da Ciência da Lógica, de tradução do professor Marco Aurélio Werle

  8. Bojkotowanie produktu a preferencje wartości konsumentów

    OpenAIRE

    Zasuwa, Grzegorz

    2015-01-01

    Celem artykułu jest poznanie związku między udziałem konsumentów w bojkotach produktów a preferowanymi przez nich wartościami. Za ramy teoretyczne przyjęto koncepcję wartości według Schwartza. Analiza empiryczna wykorzystuje dane zgromadzone podczas Europejskiego Sondażu Społecznego. Uzyskane wyniki pokazują, że konsumenci wyrażający sprzeciw wobec firm przez uczestnictwo w bojkotach odznaczają się wyższym poziomem niezależności oraz niższym poziomem konserwatyzmu (tradycja, bezpieczeństwo, k...

  9. Aktywność fizyczna w terapii otyłości

    Directory of Open Access Journals (Sweden)

    Joanna Zapolska

    2009-03-01

    Full Text Available Otyłość jest chorobą określaną jako patologiczne zwiększenie ilości tkanki tłuszczowej, która w nadmiernej ilości wpływa negatywnie na stan zdrowia, długość życia i sprawność psychofizyczną. Osoby z nadmierną masą ciała, w której zawartość tłuszczu stanowi proporcjonalnie wysoki odsetek, w porównaniu z osobami o niższej masie ciała są fizjologicznie mniej wydolni, a ich potencjał motoryczny jest niższy. W otyłości u osób dorosłych dochodzi przede wszystkim do zwiększenia rozmiarów komórek tłuszczowych. W przypadku dzieci obserwujemy przyrost liczby komórek tłuszczowych, które mogą się przyczynić do rozwoju otyłości w wieku dorosłym, gdyż zwiększenie liczby komórek jest procesem nieodwracalnym. Często rodzice aż do momentu wystąpienia znacznej otyłości nie postrzegają nadmiernej masy ciała dziecka w kategoriach problemu zdrowotnego. Istotna staje się więc rola służby zdrowia w prowadzeniu działań prewencyjnych, skierowanych na działania np. fitness clubów odpowiednio przygotowanych do podejmowania tego typu zadań. Ogólnie przyjęte zasady dawkowania ćwiczeń w treningu zdrowotnym fitness osób dorosłych oraz dzieci i młodzieży są podobne. Różnią się czasem trwania, częstotliwością podejmowania aktywności oraz stosowanymi obciążeniami. Treningi fitness obejmują głównie wytrzymałościowe formy ćwiczeń, takie jak ćwiczenia aerobowe na urządzeniach typu cardio mające za zadanie przede wszystkim uaktywnić i zredukować nadmiar tkanki tłuszczowej. Inną formą zajęć usprawniających powinny być ćwiczenia oporowe uwzględniające stosowanie urządzeń izotonicznych. Należy przy tym zwrócić szczególną uwagę na dobór ćwiczeń, obciążenie oraz kontrolę postępów. Równocześnie zaleca się stosowanie monitoringu zakresów HR każdej sesji treningu aerobowego i oporowego. Jako uzupełnienie proponowane są ćwiczenia gibkościowe wykonywane jako

  10. Entre a Filosofia e a Ciência: Merleau-Ponty e a Psicologia

    Directory of Open Access Journals (Sweden)

    Danilo Saretta Verissimo

    2007-12-01

    Full Text Available Merleau-Ponty abordou um problema da tradição filosófica que se agudizou após o desenvolvimento das ciências humanas: a discordância entre a visão que o homem pode ter de si mesmo pela reflexão ou consciência e aquela que se obtém relacionando suas condutas às condições externas das quais elas dependem. Merleau-Ponty procurou resolver essa discordância à luz das próprias experiências das ciências, particularmente, da psicologia. Segundo ele, essas experiências demandam uma revisão da ontologia moderna. Neste contexto, no presente artigo, abordamos algumas facetas do diálogo estabelecido por Merleau-Ponty com a psicologia. Apresentamos uma leitura de questões tratadas, sobretudo em seus trabalhos iniciais.

  11. Narrativas históricas: gravidade, sistemas de mundo e natureza da ciência

    Directory of Open Access Journals (Sweden)

    Juliana M. Hidalgo F. Drummond

    2015-04-01

    Full Text Available http://dx.doi.org/10.5007/2175-7941.2015v32n1p99 De acordo com o entendimento de que o ensinar ciência e o ensinar sobre a ciência não devem estar dissociados, apresenta-se um conjunto de narrativas históricas para utilização no Ensino Médio, tecendo considerações sobre os recortes históricos procedidos e as escolhas implementadas em sua elaboração. Procura-se chamar a atenção para as potencialidades, possibilidades e limitações das narrativas. Esses pontos remetem explicitamente a reflexões relacionadas a uma utilização flexível, tendo em vista particularidades dos contextos educacionais.

  12. Editorial: O pesquisador e a pesquisa em ciências criminais na contemporaneidade

    OpenAIRE

    Galícia, Caíque Ribeiro

    2017-01-01

    O presente editorial apresenta uma análise geral da realidade contemporânea do pesquisador e da pesquisa em ciências criminais no Brasil. Busca-se traçar o perfil do(a) pesquisador(a) como um importante componente da compreensão das escolhas de pautas de pesquisa em ciências criminais com enfoque para a superação da falsa pretensão de imparcialidade do sujeito-pesquisador. Nesse panorama, é feita uma análise da pesquisa jurídica no Brasil, destacando sua importância na compreensão mais técnic...

  13. Para uma reflexão do valor notícia da ciência

    OpenAIRE

    Nunes, Maria João da Silveira Machado de Sá

    2012-01-01

    Dissertação apresentada à Escola Superior de Comunicação Social como parte dos requisitos para obtenção de grau de mestre em Jornalismo. Esta dissertação pretende analisar alguns atributos que compõem o valor notícia nos discursos do jornalismo e da ciência, particularmente na especialização do jornalismo de ciência. Procura avaliar criticamente a noção de novidade tanto no discurso jornalístico como nas dimensões epistemológicas do discurso científico. É uma breve descrição da...

  14. TravisTorrent : Synthesizing Travis CI and GitHub for Full-Stack Research on Continuous Integration

    NARCIS (Netherlands)

    Beller, M.M.; Gousios, Giorgos; Zaidman, A.E.

    2017-01-01

    Continuous Integration (CI) has become a best practice of modern software development. Thanks in part to its tight integration with GitHub, Travis CI has emerged as arguably the most widely used CI platform for Open-Source Software (OSS) development. However, despite its prominent role in Software

  15. New records of bee flies (Diptera, Bombyliidae) from Cuatro Ciénegas, Coahuila, Mexico

    Science.gov (United States)

    Ávalos-Hernández, Omar; Kits, Joel; Trujano-Ortega, Marysol; García-Vázquez, Uri Omar; Cano-Santana, Zenón

    2014-01-01

    Abstract Forty one new records of species of Bombyliidae are reported for Coahuila in northeastern Mexico. Nine of these species are reported for the first time for the country. The specimens were collected in the Cuatro Ciénegas Basin and Sierra La Madera mountains during 2007–2013. The modified distributions of species are discussed. The gaps in the distribution of many species suggest an undersampling of this group of insects in the north of Mexico. PMID:25061389

  16. History of Met Lab Section C-I, May 1943 to April 1944

    Energy Technology Data Exchange (ETDEWEB)

    Seaborg, G.T.

    1978-05-01

    This is part of a history of the research work of Seaborg and associates in the University of Chicago Metallurgical Laboratory, Chemistry Section C-I. The work was concerned with the development of chemical procedures for the extraction of plutonium, for the purification of plutonium, and for research on the isotopes of other heavy elements including other transuranium elements. The style of the history is that of a diary with footnotes giving additional information. (DLC)

  17. Combustion Noise Analysis for Combustion and Fuels Diagnosis of a CI Diesel Engine Operating with Biodiesels

    OpenAIRE

    Zhen, Dong; Shi, Zhanqun; Song, Zhongyue; Gu, Fengshou; Ball, Andrew

    2015-01-01

    In this paper, the combustion noise of a compression ignition (CI) diesel engine operating with biodiesels has been investigated experimentally. It aims to explore an effective method for combustion process monitoring and fuel quality evaluation through analysing the characteristics of the engine combustion noise. The experiments were conducted on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine fuelled with biodiesels (B50 and B100) and normal pure diesel, and op...

  18. Time course of auditory streaming: Do CI users differ from normal-hearing listeners?

    Directory of Open Access Journals (Sweden)

    Martin eBöckmann-Barthel

    2014-07-01

    Full Text Available In a complex acoustical environment with multiple sound sources the auditory system uses streaming as a tool to organize the incoming sounds in one or more streams depending on the stimulus parameters. Streaming is commonly studied by alternating sequences of signals. These are often tones with different frequencies. The present study investigates stream segregation in cochlear implant (CI users, where hearing is restored by electrical stimulation of the auditory nerve. CI users listened to 30-s long sequences of alternating A and B harmonic complexes at four different fundamental frequency separations, ranging from 2 to 14 semitones. They had to indicate as promptly as possible after sequence onset, if they perceived one stream or two streams and, in addition, any changes of the percept throughout the rest of the sequence. The conventional view is that the initial percept is always that of a single stream which may after some time change to a percept of two streams. This general build-up hypothesis has recently been challenged on the basis of a new analysis of data of normal-hearing listeners which showed a build-up response only for an intermediate frequency separation. Using the same experimental paradigm and analysis, the present study found that the results of CI users agree with those of the normal-hearing listeners: (i the probability of the first decision to be a one-stream percept decreased and that of a two-stream percept increased as Δf increased, and (ii a build-up was only found for 6 semitones. Only the time elapsed before the listeners made their first decision of the percept was prolonged as compared to normal-hearing listeners. The similarity in the data of the CI user and the normal-hearing listeners indicates that the quality of stream formation is similar in these groups of listeners.

  19. History of Met Lab Section C-I, May 1943 to April 1944

    International Nuclear Information System (INIS)

    Seaborg, G.T.

    1978-05-01

    This is part of a history of the research work of Seaborg and associates in the University of Chicago Metallurgical Laboratory, Chemistry Section C-I. The work was concerned with the development of chemical procedures for the extraction of plutonium, for the purification of plutonium, and for research on the isotopes of other heavy elements including other transuranium elements. The style of the history is that of a diary with footnotes giving additional information

  20. Experimental evaluation of C.I. engine performance using diesel blended with Jatropha biodiesel

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, Sunil [Mechanical Department, R. G. P. V. Bhopal (M.P.) (India); Chaube, Alok [Mechanical Department, Jabalpur Engineering College Jabalpur (M.P.) (India); Jain, Shashi Kumar [School of Energy and Environment Management, R.G.P.V. Bhopal (India)

    2012-07-01

    Costlier and depleting fossil fuels are prompting researchers to use edible as well as non-edible vegetable oils as promising alternative to petro-diesel. The higher viscosity of vegetable oils leads to problem in pumping, atomization and spray characteristics. The improper mixing of vegetable oils with air leads to incomplete combustion. The best way to use vegetable oils as fuel in compression ignition (CI) engines is to convert it into biodiesel. Biodiesel is a methyl or ethyl ester of fatty acids made from vegetable oils (both edible and non-edible) and animal fat. The main feedstock for biodiesel production can be non-edible oil obtained from Jatropha curcas plant. Jatropha curcas plant can be cultivated on different terrains in India under extreme climatic conditions. Biodiesel can be used in its pure form or as a blend with petro-diesel in different proportions. It is being used in CI engines because it has properties similar to petro-diesel. The aim of this paper is to analyze suitability of petro-diesel blended with biodiesel in varying proportions in CI engines. For this purpose, a stationary single-cylinder four-stroke CI engine was tested with diesel blended with Jatropha biodiesel in 0%, 5%, 20%, 50%, 80% and 100%. Comparative measures of specific fuel consumption (SFC), brake thermal efficiency, smoke opacity, HC, CO2, CO, O2, NOX have been presented and discussed. Engine performance in terms of comparable brake thermal efficiency and SFC with lower emissions (HC, CO2, CO) was observed with B20 fuel compared to petro-diesel. Volumetric efficiency showed almost no variation for all the blends. Important observations related to noise and vibrations during testing have also been discussed.

  1. Doutrinas, escolas novas razões de entendimentos na Ciência Contábil

    Directory of Open Access Journals (Sweden)

    Antonio Lopes de Sá

    2005-03-01

    Full Text Available Longo foi o curso do pensamento de intelectuais para conduzir a Contabilidade a uma condição superior do conhecimento humano. Hoje, como ciência, rica em doutrinas, segue o saber contábil o seu destino, valorizado pelos esforços de grandes escolas do pensamento científico, dentre as quais se destaca o Neopatrimonialismo.

  2. Objective assessment of stream segregation abilities of CI users as a function of electrode separation

    DEFF Research Database (Denmark)

    Paredes Gallardo, Andreu; Madsen, Sara Miay Kim; Dau, Torsten

    Auditory streaming is a perceptual process by which the human auditory system organizes sounds from different sources into perceptually meaningful elements. Segregation of sound sources is important, among others, for understanding speech in noisy environments, which is especially challenging...... assessed obligatory stream segregation, little attention has been given to voluntary stream segregation, a process where the listener actively tries to segregate the sounds. It is therefore unclear whether CI users are able to experience voluntary stream segregation as a function of electrode separation...

  3. Klozapina: między skutecznością a bezpieczeństwem

    Directory of Open Access Journals (Sweden)

    Tomasz Sobów

    2015-07-01

    Full Text Available Klozapina, choć uważana za bardzo skuteczny lek przeciwpsychotyczny, jest stosowana rzadziej, niż wynikałoby z przesłanek klinicznych wspierających jej stosowanie. Co najmniej 1/3 chorych ze schizofrenią spełnia kliniczne kryteria lekooporności, charakteryzuje się wysokim ryzykiem samobójstwa lub reaguje nasilonymi objawami pozapiramidowymi na inne leki przeciwpsychotyczne. Możliwym powodem relatywnie rzadkiego sięgania po klozapinę w praktyce klinicznej jest postrzeganie leku jako obarczonego poważnymi objawami niepożądanymi. Agranulocytoza i inne dyskrazje krwi są dobrze znane, a zasady prewencji – uporządkowane zaleceniami. O innych objawach niepożądanych, również tych potencjalnie niebezpiecznych (kardiomiopatia, zapalenia mięśnia sercowego, niedrożność jelit czy drgawki wiadomo mniej. Ryzyko wystąpienia groźnych powikłań kuracji klozapiną można jednak zminimalizować, a same powikłania – wykrywać i leczyć, pod warunkiem zachowania czujności diagnostycznej. Świadomość ryzyka i korzyści związanych ze stosowaniem klozapiny to warunek konieczny skutecznego i bezpiecznego użycia tego leku oraz pełnego wykorzystania jego niezwykłych właściwości.

  4. CI as a Tracer of Gas Mass in Star Forming Galaxies

    Science.gov (United States)

    Bourne, Nathan

    2018-01-01

    Research in galaxy evolution aims to understand the cosmic industry of converting gas into stars. While SFR and stellar mass evolution are well constrained by current data, our knowledge of gas in galaxies throughout cosmic time is comparatively lacking. Almost all high-redshift gas measurements to date rely on CO as a tracer, but this is subject to systematic uncertainties due to optically thick emission and poorly constrained dependences on gas density, distribution and metallicity. Recently, some attention has been given to dust continuum as an alternative gas tracer, which shows promise for large samples but still requires accurate calibration on a direct gas tracer at high redshift. The [CI] 492GHz emission line could overcome much of the systematic uncertainty, as it is optically thin and has similar excitation conditions to CO(1-0), but observational limitations have so far restricted CI measurements to very small samples. I will presen t some new data from ALMA, for the first time testing the CI/dust correlation in a representative sample of star-forming galaxies at z=1, and discuss how future observations could be designed to more widely exploit this independent gas tracer.

  5. Koncepcje społecznie odpowiedzialnegogospodarowania i inwestowaniaszansą rozwoju rachunkowości 

    Directory of Open Access Journals (Sweden)

    Elżbieta Pogodzińska-Mizdrak

    2010-05-01

    Full Text Available Społeczna odpowiedzialność biznesu stanowi szeroką koncepcję uwzględniania przez podmioty gospodarcze wymogów etyki, potrzeb społecznych i ekologicznych. Z idei odpowiedzialności przedsiębiorstw przed społeczeństwem wykształciły się idee pochodne, tj. zarządzanie zgodne z otoczeniem naturalnym i społecznym, określane skrótem ESG (Environment Social Gowernance oraz społecznie odpowiedzialne inwestowanie (Social Responsibility Investment, określane skrótem SRI, które bardziej szczegółowo i konkretnie definiują zadania stojące przed przedsiębiorcami, me-nedżerami i inwestorami deklarującymi się jako jednostki społecznie odpowiedzial-ne wobec szerokiego grona interesariuszy. Rachunkowość jako rozbudowany system pomiaru ekonomicznego, a zarazem sys-tem informacyjno-kontrolny i sprawozdawczy, stwarza udokumentowaną podstawę rozrachunku (wewnętrznego i zewnętrznego z tytułu odpowiedzialności podmiotów gospodarczych za efektywność i społeczno-ekonomiczną racjonalność gospodarowania.

  6. Classroom performance and language development of CI students placed in mainstream elementary school.

    Science.gov (United States)

    Damen, Godelieve W J A; Langereis, Margreet C; Snik, Ad F M; Chute, Patricia M; Mylanus, Emmanuel A M

    2007-06-01

    Investigation of the relation between classroom performance and language development of cochlear implant (CI) students in mainstream education. Structural analyses of assessment of mainstream performance (AMP) and Screening Instrument For Targeting Educational Risk (SIFTER) instruments. Cross-sectional instrument and language development analyses. Tertiary university medical center. Twenty-six CI children in elementary school with congenital or prelingual deafness were included. At the time of this study, mean period of multichannel CI use was 5.3 years, and children's ages ranged from 6.5 to 12.8 years. Assessment of mainstream performance and SIFTER instruments measured classroom performance and language development were measured by means of Reynell and Schlichting tests. Assessment of mainstream performance and SIFTER domains showed good reliability (Cronbach alpha >0.6), but factor analyses only showed the expected instrument structure in the AMP. In both questionnaires and within all domains, individual variability is detected. Spearman's correlation analyses showed the probable explanation of individual questionnaire variability by language test results (p value mostly mainstream education varies. Correlation analyses showed strong significant relation between questionnaire results (classroom performance) and both expressive and receptive language test results (Schlichting and Reynell tests). Structural questionnaire analyses of the AMP and SIFTER demonstrated good reliability. The predictive value of the AMP can monitor the actual linguistic functioning of the child.

  7. Panorama das pesquisas brasileiras sobre educação em museus de ciências

    Directory of Open Access Journals (Sweden)

    Daniel Bovolenta Ovigli

    Full Text Available Resumo: A pesquisa sobre Educação em Ciências tem alcançado grande crescimento no Brasil, especialmente nas últimas quatro décadas. O volume dessa produção científica demanda a realização de estudos voltados à identificação de suas principais características e tendências, havendo poucos trabalhos que se concentram em sistematizar o que foi produzido. Nesse contexto, este artigo de revisão identifica e descreve características e tendências das pesquisas desenvolvidas no subcampo educação em museus de ciências. De natureza qualitativa e quantitativa, realiza uma análise documental histórico-bibliográfica. O material empírico consistiu em 122 dissertações e 31 teses, produzidas no período compreendido entre 1981 e 2010, que foram mapeadas em seis categorias. As produções analisadas foram defendidas predominantemente na última década considerada, mostrando que a área em questão configura-se como emergente temática de pesquisa no campo da Educação em Ciências.

  8. Commercial mitigation techniques used in remediating a 2200 pCi/L public building

    International Nuclear Information System (INIS)

    Davidson, J.G.

    1990-01-01

    This paper reports on commercial mitigation techniques used in remediating a 2200 pCi/L public building. In March of 1989 EPA and Pa. DER officials were amazed to discover a school in Pennsylvania with levels in its library of 2200 pCi/L. The library was a 30 year old, three story slab-on-grade structure more like a commercial building than a typical school structure. It had three separate and complex HVAC systems. Initial diagnostics indicated radon levels under the slab at over 80,000 pCi/L. Further investigations revealed major entry routes and a HVAC system terribly out of balance. Remediation consisted of installing a complex sub-slab depressurization system with an exterior commercial fan unit, major entry route sealing, and working closely with a mechanical contractor to bring the HVAC systems back into balance. Initial post remediation testing showed a 99% drop in radon levels. Refinements to the system are still in progress

  9. Emission Characteristics of a CI Engine Running with a Range of Biodiesel Feedstocks

    Directory of Open Access Journals (Sweden)

    Belachew Tesfa

    2014-01-01

    Full Text Available Currently, alternative fuels are being investigated in detail for application in compression ignition (CI engines resulting in exciting potential opportunities to increase energy security and reduce gas emissions. Biodiesel is one of the alternative fuels which is renewable and environmentally friendly and can be used in diesel engines with little or no modifications. The objective of this study is to investigate the effects of biodiesel types and biodiesel fraction on the emission characteristics of a CI engine. The experimental work was carried out on a four-cylinder, four-stroke, direct injection (DI and turbocharged diesel engine by using biodiesel made from waste oil, rapeseed oil, corn oil and comparing them to normal diesel. The fuels used in the analyses are B10, B20, B50, B100 and neat diesel. The engine was operated over a range of engine speeds. Based on the measured parameters, detailed analyses were carried out on major regulated emissions such as NOx, CO, CO2, and THC. It has been seen that the biodiesel types (sources do not result in any significant differences in emissions. The results also clearly indicate that the engine running with biodiesel and blends have higher NOx emission by up to 20%. However, the emissions of the CI engine running on neat biodiesel (B100 were reduced by up to 15%, 40% and 30% for CO, CO2 and THC emissions respectively, as compared to diesel fuel at various operating conditions.

  10.  Przyczynek do teorii ugruntowanej rozwoju rachunkowości. Analiza przypadku Armenii

    Directory of Open Access Journals (Sweden)

    Anna Karmańska

    2015-06-01

    Full Text Available W artykule przedstawiono zarys koncepcyjny i doświadczenia związane z przeprowadzaniem badania naukowego, którego celem jest: 1 poznanie – u źródeł – przyczyn i okoliczności towarzyszących rozwojowi prawa bilansowego w państwach postkomunistycznych; 2 podjęcie próby sformułowania teorii ugruntowanej w tym obszarze. Badanie jest w trakcie realizacji zgodnie z koncepcją metodologii teorii ugruntowanej i z wykorzystaniem metody analizy przypadku. W niniejszym tekście prezentuje się wybrane ustalenia odnoszące się do Armenii, której praktyka rozwoju prawa rachunkowości – w tym badaniu – traktowana jest jako pierwsza analiza przypadku. Dzieląc się praktycznym doświadczeniem, autorka prezentuje przykład tzw. noty początkowej występującej w metodologii teorii ugruntowanej na etapie gromadzenia danych. Przy tej okazji nakreśla obraz rozwoju rachunkowości w tym kraju. 

  11. A ciência da vulnerabilidade: modelos, métodos e indicadores

    Directory of Open Access Journals (Sweden)

    Susan L. Cutter

    2012-10-01

    Full Text Available A ciência da vulnerabilidade consiste na integração multidisciplinar das ciências sociais, das ciências naturais e da engenharia na compreensão das circunstâncias que colocam as populações e os locais em risco devido aos perigos, e dos factores que aumentam ou reduzem a capacidade de resposta e de recuperação das populações, dos sistemas físicos ou das infraestruturas em relação a ameaças ambientais. A integração das diversas perspectivas requer análises baseadas nos locais com recurso a ferramentas e tecnologias geoespaciais. Este artigo descreve os instrumentos e os métodos para medir e cartografar a exposição ao risco (chamada vulnerabilidade física, a medição e a cartografia da propensão das populações para os riscos (designada vulnerabilidade social e a intersecção dos dois para criar as análises baseadas nos locais. A intersecção da vulnerabilidade física e da vulnerabilidade social cria a paisagem dos riscos (hazardscape que, por sua vez, ajuda os investigadores a compreender os impactos diferenciados dos riscos e dos desastres nos locais e nos respectivos habitantes.

  12. Linguística Aplicada: uma ciência pós-moderna

    Directory of Open Access Journals (Sweden)

    Pollyanna Lima de Barros

    2012-12-01

    Full Text Available Com o objetivo de apresentar o que é Linguística Aplicada, baseando-se em suas práticas atuais na sociedade e em seu objeto de pesquisa, defendemos que a linguística aplicada é uma ciência pós-moderna que tem o objetivo de investigar os atuais e constantes avanços da linguagem. Veremos aqui que a linguística aplicada não trabalha em um único campo. Como ciência interdisciplinar a linguística aplicada conhecida também como LA, investiga a linguagem por meio de várias áreas, tais como: a filosofia, a sociologia, a psicologia entre outras. Com base em alguns teóricos da LA e nos conceitos de pós-modernidade definidos por alguns sociólogos contemporâneos, apresentamos a LA como uma ciência pós-moderna.

  13. Structural and functional properties of chimeric EspA-FliCi filaments of EPEC.

    Science.gov (United States)

    Crepin, Valerie F; Martinez, Eric; Shaw, Robert K; Frankel, Gad; Daniell, Sarah J

    2008-04-18

    Enteropathogenic Escherichia coli utilise a filamentous type III secretion system to translocate effector proteins into host gut epithelial cells. The primary constituent of the extracellular component of the filamentous type III secretion system is EspA. This forms a long flexible helical conduit between the bacterium and host and has a structure almost identical to that of the flagella filament. We have inserted the D3 domain of FliCi (from Salmonella typhimurium) into the outer domain of EspA and have studied the structure and function of modified filaments when expressed in an enteropathogenic E. coli espA mutant. We found that the chimeric protein EspA-FliCi filaments were biologically active as they supported protein secretion and translocation [assessed by their ability to trigger actin polymerisation beneath adherent bacteria (fluorescent actin staining test)]. The expressed filaments were recognised by both EspA and FliCi antisera. Visualisation and analysis of the chimeric filaments by electron microscopy after negative staining showed that, remarkably, EspA filaments are able to tolerate a large protein insertion without a significant effect on their helical architecture.

  14. A Formação de professores e os desafios de ensinar Ciências

    Directory of Open Access Journals (Sweden)

    Rita Helena Moreira Seixas

    2017-02-01

    Full Text Available Este artigo tem como objetivo refletir a respeito da formação inicial e/ou continuada dos professores, de seus desafios no ensino de Ciências e da forma como orientam seus alunos na construção do conhecimento científico. Aborda, sob a ótica de diferentes autores, o “saber” e o “saber fazer” dos professores de ciências, na ideia de aprendizagem como construção de conhecimentos. Aponta para o perfil do professor de ciências como aquele que fará a mediação do conhecimento para seus alunos objetivando a aprendizagem, tendo como desafio a utilização do conhecimento científico, das tecnologias educacionais e de estratégias didáticas que, muitas vezes, não estiveram presentes em sua formação. O ensino realizado por esse professor é visto, também, como aprendizagem para ele. Por fim, considera a necessidade de qualificação do professor, para que esse não fique à margem das necessidades escolares sem identificar suas insuficiências.

  15. sobre la calidad del agua de la ciénaga

    Directory of Open Access Journals (Sweden)

    Diego Alejandro Chalarca Rodríguez

    2007-01-01

    Full Text Available En el municipio de Ayapel, departamento de Córdoba, se realizaron cuatro muestreos de campo con el fin de obtener información representativa de las variaciones horarias del agua residual del municipio como también de la calidad del agua en la zona de influencia de éstas en la ciénaga de Ayapel. En el sector donde se presentan las principales descargas del alcantarillado se determinaron las variables fisicoquímicas y microbiológicas del agua residual doméstica y de la ciénaga. Ello con el fin de determinar el posible impacto de las aguas residuales domésticas sobre la calidad del agua de un sector de la ciénaga de Ayapel.Los resultados del estudio permiten afirmar que existe un impacto de las aguas residuales sobre el complejo cenagoso, sin embargo estas descargas afectan principalmente la calidad ambiental de los sitios aledaños al casco urbano del municipio de Ayapel, principalmente en las épocas de aguas bajas incluyendo la zona pelágica del sector E0.

  16. The Role of MOR and the CI Operator Sites on the Genetic Switch of the Temperate Bacteriophage TP901-1

    DEFF Research Database (Denmark)

    Pedersen, Margit; Hammer, Karin

    2008-01-01

    . The cloned DNA fragment contained the two divergently oriented promoters, P-R and P-L, transcribing the lysogenic and lytic gene clusters; the two promoter-. proximal genes, cl and mor; and the three CI operator sites, O-R, O-L and O-D. We show that mor encodes a protein and that this protein in concert......-D) is enough to maintain a bistable system. The distantly located operator site, 01:), functions as a helper site by increasing binding of CI at O-R and O-L. In the immune state, O-D increases repression of the lytic promoter, P-L. Our results strongly support the model that a hexameric form of Cl binds...... cooperatively to the three operator sites in the immune state forming a CI-DNA loop structure. Finally, we show that in the anti-immune state, repression of the lysogenic promoter is independent of the known CI operator sites but requires the presence of both CI and MOR....

  17. Internacionalização da Ciência Brasileira: subsídios para avaliação do programa Ciência sem Fronteiras

    Directory of Open Access Journals (Sweden)

    Guilherme de Rosso Manços

    2017-12-01

    Full Text Available O programa Ciência sem Fronteiras (CsF concedeu, entre 2011-2016, bolsas a 106 mil estudantes e pesquisadores brasileiros para realizarem intercâmbio acadêmico em 47 países e buscou atrair pesquisadores do exterior para se fixarem no Brasil ou para estabelecerem parcerias com os pesquisadores brasileiros nas áreas prioritárias definidas pelo programa. Neste contexto, este artigo objetiva oferecer alguns subsídios para a avaliação do CsF, especialmente a partir de um compêndio sobre o histórico, justificativa e resultados de implementação do programa; um levantamento e análise de dados que mostram evidências de correlação positiva entre os investimentos em bolsas de mobilidade acadêmica internacional e os níveis de colaboração científica internacional; bem como questionamentos e sugestões para novas pesquisas em torno do tema de colaboração científica internacional. Foram encontrados indícios de que o programa foi capaz de estimular a colaboração internacional entre pesquisadores. Ressalta-se também o entendimento de que o CsF foi positivo no sentido de aumentar a visibilidade internacional da educação superior brasileira e inseriu as universidades e outras instituições brasileiras em programas de cooperação internacional no âmbito da pesquisa. Neste sentido, recomenda-se que o Brasil deve envidar esforços para manter uma política pública de internacionalização e mobilidade acadêmica internacional, aperfeiçoando – naturalmente – o CsF com base na avaliação do programa.

  18. Characterisation of the artificial neural network CiPS for cirrus cloud remote sensing with MSG/SEVIRI

    Directory of Open Access Journals (Sweden)

    J. Strandgren

    2017-11-01

    Full Text Available Cirrus clouds remain one of the key uncertainties in atmospheric research. To better understand the properties and physical processes of cirrus clouds, accurate large-scale observations from satellites are required. Artificial neural networks (ANNs have proved to be a useful tool for cirrus cloud remote sensing. Since physics is not modelled explicitly in ANNs, a thorough characterisation of the networks is necessary. In this paper the CiPS (Cirrus Properties from SEVIRI algorithm is characterised using the space-borne lidar CALIOP. CiPS is composed of a set of ANNs for the cirrus cloud detection, opacity identification and the corresponding cloud top height, ice optical thickness and ice water path retrieval from the imager SEVIRI aboard the geostationary Meteosat Second Generation satellites. First, the retrieval accuracy is characterised with respect to different land surface types. The retrieval works best over water and vegetated surfaces, whereas a surface covered by permanent snow and ice or barren reduces the cirrus detection ability and increases the retrieval errors for the ice optical thickness and ice water path if the cirrus cloud is thin (optical thickness less than approx. 0.3. Second, the retrieval accuracy is characterised with respect to the vertical arrangement of liquid, ice clouds and aerosol layers as derived from CALIOP lidar data. The CiPS retrievals show little interference from liquid water clouds and aerosol layers below an observed cirrus cloud. A liquid water cloud vertically close or adjacent to the cirrus clearly increases the average retrieval errors for the optical thickness and ice water path, respectively, only for thin cirrus clouds with an optical thickness below 0.3 or ice water path below 5.0 g m−2. For the cloud top height retrieval, only aerosol layers affect the retrieval error, with an increased positive bias when the cirrus is at low altitudes. Third, the CiPS retrieval error is

  19. Direct Simple Shear Test Data Analysis using Jupyter Notebooks on DesignSafe-CI

    Science.gov (United States)

    Eslami, M.; Esteva, M.; Brandenberg, S. J.

    2017-12-01

    Due to the large number of files and their complex structure, managing data generated during natural hazards experiments requires scalable and specialized tools. DesignSafe-CI (https://www.designsafe-ci.org/) is a web-based research platform that provides computational tools to analyze, curate, and publish critical data for natural hazards research making it understandable and reusable. We present a use case from a series of Direct Simple Shear (DSS) experiments in which we used DS-CI to post-process, visualize, publish, and enable further analysis of the data. Current practice in geotechnical design against earthquakes relies on the soil's plasticity index (PI) to assess liquefaction susceptibility, and cyclic softening triggering procedures, although, quite divergent recommendations on recommended levels of plasticity can be found in the literature for these purposes. A series of cyclic and monotonic direct simple shear experiments was conducted on three low-plasticity fine-grained mixtures at the same plasticity index to examine the effectiveness of the PI in characterization of these types of materials. Results revealed that plasticity index is an insufficient indicator of the cyclic behavior of low-plasticity fine-grained soils, and corrections for pore fluid chemistry and clay minerology may be necessary for future liquefaction susceptibility and cyclic softening assessment procedures. Each monotonic, or cyclic experiment contains two stages; consolidation and shear, which include time series of load, displacement, and corresponding stresses and strains, as well as equivalent excess pore-water pressure. Using the DS-CI curation pipeline we categorized the data to display and describe the experiment's structure and files corresponding to each stage of the experiments. Two separate notebooks in Python 3 were created using the Jupyter application available in DS-CI. A data plotter aids visualizing the experimental data in relation to the sensor from which it was

  20. A universidade corrupta: o jeitinho brasileiro de se fazer ciência

    Directory of Open Access Journals (Sweden)

    Ivan Martins Fontes Leichsenring

    2013-12-01

    Full Text Available Antes do advento do Sistema Qualis, a pesquisa enviesada sempre pareceu ser uma via fácil na obtenção de financiamento, reconhecimento e privatização da máquina universitária nas mãos de poucos grupos científicos, como há muito, por exemplo, tem nos demonstrado a área de Medicina e suas relações um tanto discutíveis com a indústria farmacêutica. Neste estudo, após um breve levantamento histórico-comparativo com a situação alemã do Entre Guerras, tecemos algumas críticas sobre a atual produção científica brasileira nas Ciências Humanas e ao atrelamento de nossas universidades públicas aos modelos internacionais e cientificistas de produtividade. E, também, tentamos debater como a corrupção científica tem se construído e fortalecido por causa da enorme pressão do “publicar ou perecer” e da adoção do Sistema Qualis, que têm induzido nossos cientistas a optar por consagrar temas já anteriormente pré-consagrados, evitando assim a crítica, anulando possíveis questionamentos, estimulando a publicação de “artigos-placebo” e impedindo, em última análise, o desenvolvimento científico e tecnológico do país. Abstract: Before the advent of the Qualis System, skewed research always seemed to be an easy way to obtain funding, recognition and privatization of the university machine in the hands of a few scientific groups, as for a long while, the area of medicine and its somewhat controversial relationships with the pharmaceutical industry has shown us. In this study, after a brief comparative-historical survey with the German situation of interwar period, some criticism have been weaved about the current Brazilian scientific production in the humanities and the bundling of our public universities to international and scientificist productivity models. A discussion has also been tried on how scientific corruption has built and strengthened because of the enormous pressure of 'publishing or perishing' and

  1. Cluster expansion of the wavefunction. Calculation of electron correlations in ground and excited states by SAC and SAC CI theories

    International Nuclear Information System (INIS)

    Nakatsuji, H.

    1979-01-01

    The SAC and SAC CI theories are formulated for actual calculations of singlet ground states and their excited states of arbitrary spin multiplicity. Approximations are considered for the variational methods since time-consuming terms are involved. The results of test calculations for singlet states have shown, with much smaller numbers of variables (sizes of the matrices involved), excellent agreement with the full CI and close-to-full CI results. This shows the utility of the SAC theory for ground states and especially of the SAC CI theory for excited states, since the slow convergence of the CI theory is much more critical for excited states than for ground states. (Auth.)

  2. Spacecraft COst REduction Team (SCORE): TQM/CI on a massive scale

    Science.gov (United States)

    Bullard, Jerry D.

    1992-01-01

    The business of building satellites and space systems has matured. Few missions require, or can afford, excellent performance at any price. The new paradigm is doing more with less, providing quality systems at lower cost--in other words, doing our job 'Faster-Better-Cheaper.' The TRW Spacecraft COst REduction (SCORE) initiative was launched in 1990 by Daniel S. Goldin, then general manager of TRW's Space & Technology Group. The SCORE mission is to apply continuous improvement (CI) techniques to effect major reductions in the cost (our primary goal) and span time (as a corollary) required for the production of spacecraft. SCORE is a multi-year initiative that is having a profound effect on both the procedural and the cultural aspects of how we do business. The objectives of this initiative are being realized. The focus of this paper is not on the results of SCORE per se, but rather on the things we have leaned about how to do continuous improvement on a massive scale, with multilevel (hierarchical) CI teams. The following sections summarize the chronology of the SCORE initiative, from team formation to development of the year-end report for 1991. Lessons learned, the core of this presentation, are discussed--with particular focus on the unique aspects of SCORE. The SCORE initiative is continuing and, as a part of our evolving culture, will never end. It has resulted in profound insights into the way we do work and (the topic at hand) how to do CI for large and complex multidisciplinary development activities.

  3. Estágio hospitalar em Optometria em Ciências da Visão

    OpenAIRE

    Macário, Daniel Fernando Bartolomeu

    2009-01-01

    Realizado o primeiro ano do Mestrado em Optometria em Ciências da Visão, onde varias vezes abordamos o paciente de optometria sob uma perspectiva diferente, surge então a oportunidade de realizar um estágio hospitalar de forma a estar um pouco mais dentro do dia-adia desse campo que varias vezes tinha ouvido falar mas que ainda me era desconhecido. Com a aprovação e o apoio do Dr. Santiago Garcia, médico oftalmologista do Hospital Universitário de Salamanca, tive a oportunidade de conhecer es...

  4. A ciência nas utopias de Campanella, Bacon, Comenius, e Glanvill

    Directory of Open Access Journals (Sweden)

    Bernardo Jefferson de Oliveira

    2002-12-01

    Full Text Available Este artigo analisa comparativamente o papel que a ciência e a técnica ocupam nas sociedades descritas em A cidade do Sol de Tommasio Campanella, a Nova Atlântida de Francis Bacon, Panorthosia de Jan Amós Comenius e o Complemento à Nova Atlântida de Joseph Glanvill.This article evaluates the role that science and technology plays in the societies described by early modern utopias, making a comparative analysis of Tommasio Campanella's City of Sun, Francis Bacon's New Atlantis, Jan Amós Comenius' Panorthosia, and Joseph Glanvill's The summe of my lord Bacon's New Atlantis.

  5. As ciências da psique no espiritismo brasileiro: C. 1900-C. 1960

    OpenAIRE

    Leite, Igor Alleoni Silveira

    2016-01-01

    As Ciências da Psique no período que abrange 1900 a 1960 envolvem concepções que remetem nomeadamente à Psiquiatria e a insipiente Psicologia, mas também outras correntes que geraram embates ou simpatizantes frente ao Espiritismo brasileiro, entre elas estaria a Parapsicologia. A região estudada envolve o estado de São Paulo, levando-se em consideração o tempo histórico em que fatores importantes ocorreram no período estabelecido, como os dados identificados na literatura que apontam os confl...

  6. Ciénaga (Magdalena, una región administrativa o municipio de enclave

    Directory of Open Access Journals (Sweden)

    Luis Humberto Hernández

    2006-01-01

    Full Text Available El análisis sobre las regiones de enclave, el caso del municipio de Ciénaga, en el Magdalena, nos permitió concluir que su proceso de modernización estuvo determinado por la presencia de la empresa multinacional bananera United Fruit Company. La multinacional bananera fue la que introdujo en la región el trabajo asalariado moderno, dislocando las formas serviles y premodernas existentes. Al atraer la mano de obra servil regional, que utilizaban las haciendas ganaderas, y convertirla en mano de obra asalariada, fundamentó sus procesos socioeconómicos y político administrativo modernos.

  7. Kriegsbeute-Ausstellung Posen 1917. Propagandowa wystawa dla szerokiej publiczności

    Directory of Open Access Journals (Sweden)

    Jakub Skutecki

    2014-01-01

    Full Text Available W zbiorach ikonograficznych Biblioteki Uniwersyteckiej w Poznaniu znajduje się seria widokówek dokumentujących zorganizowaną w 1917 roku Wystawę Zdobyczy Wojennych (Kriegsbeute-Ausstellung Posen 1917, jedną z serii propagandowych ekspozycji prezentujących sukcesy armii niemieckich na wszystkich frontach wielkiej wojny. W czasie trwania wystawy w pobliżu belgijskiego Passchendaele toczyła się jedna z najkrwawszych bitew, a w Poznaniu – codzienne życie w wojennej rzeczywistości.

  8. Microfossils of filamentous prokaryotes in CI1 and CM2 meteorites

    Science.gov (United States)

    Hoover, Richard B.

    2008-08-01

    Field Emission Scanning Electron Microscopy (FESEM) studies of recently obtained samples of Orgueil, Ivuna and Murchison meteorites have provided further evidence for the existence of indigenous filamentous microfossils embedded in the mineral matrix of CI1 and CM2 carbonaceous meteorites. Energy Dispersive X-ray Spectroscopy (EDS) spot data and 2-D elemental X-ray maps establish that the nitrogen and sulphur content of the forms found in the meteorites are dramatically different from modern prokaryotic and eukaryotic cells. These results are interpreted as providing additional evidence for the existence of a complex suite of indigenous microfossils in carbonaceous meteorites.

  9. A ciência nas utopias de Campanella, Bacon, Comenius, e Glanvill

    OpenAIRE

    Oliveira, Bernardo Jefferson de

    2002-01-01

    Este artigo analisa comparativamente o papel que a ciência e a técnica ocupam nas sociedades descritas em A cidade do Sol de Tommasio Campanella, a Nova Atlântida de Francis Bacon, Panorthosia de Jan Amós Comenius e o Complemento à Nova Atlântida de Joseph Glanvill.This article evaluates the role that science and technology plays in the societies described by early modern utopias, making a comparative analysis of Tommasio Campanella's City of Sun, Francis Bacon's New Atlantis, Jan Amós Comeni...

  10. Temas socioambientais: contribuições para o ensino de ciências naturais

    OpenAIRE

    FERREIRA, Darlene Teixeira

    2011-01-01

    A introdução de temas socioambientais contemporâneos em sala de aula, em especial nas aulas de Ciências Naturais, no ensino médio, pode significar o surgimento de uma estratégia eficaz para a formação de cidadãos críticos e atuantes na sociedade. Esses temas, aliados aos conteúdos das referidas disciplinas, favorecem uma compreensão mais complexa do estado do nosso planeta, e possibilitam discussões relacionadas à sustentabilidade. Na perspectiva de contribuir para a qualificação do ens...

  11. Livros didáticos de ciências: a Física e alguns problemas

    OpenAIRE

    Pimentel, Jorge Roberto; UNESP - São Paulo

    1998-01-01

    Este artigo relata problemas no conteúdo de Física, observados em alguns livros didáticos de Ciências, de 5i! a Si! séries, disponíveis no mercado. Sua presença reforça o fato de que o livro didático não é um guia infalível, podendo conter incorreções. Assim, no processo de seleção de um livro, o professor deve efetuar uma análise bastante criteriosa e, durante suas aulas, estar preparado para detectar e corrigir adequadamente eventuais problemas.

  12. Kobieta zakodowana. Przedsiębiorczości kobiet a nowe technologie

    OpenAIRE

    Niedzielska, Ewelina

    2015-01-01

    W obecnych warunkach intensywnego rozwoju nowoczesnych technologii funkcjonowanie przedsiębiorstw zyskało nowe cechy i możliwości. Technologie obliczeniowe i elektronicznej wymiany informacji wielorako wpływają na sposoby działania firm. Z jednej strony stanowią narzędzia pomocne do usprawniania pracy przedsiębiorstw, z drugiej zaś mogą być podstawą do tworzenia nowych przedsięwzięć biznesowych. Wnioski zawarte w monografii ukazują konieczność pogłębiania wiedzy na temat zastosowania ...

  13. O jogo de RPG como ferramenta auxiliar de aprendizagem na disciplina de Ciências

    OpenAIRE

    Santos, Luiz Otávio Silva

    2003-01-01

    A reflexão a respeito da forma tradicional de ensino, caracterizada por uma maneira estática e descritiva, que ainda persiste nas Escolas e o enriquecimento do mundo social têm motivado a procura por novas técnicas que estimulem os alunos para o processo de ensino/aprendizagem, como os jogos de representação denominados de RPG (do inglês Roleplaying Games), já utilizados em várias disciplinas. Dada a riqueza de temas de Ciências e Biologia que poderiam ser explorados através do RPG, nos...

  14. Ultrasonic assisted dyeing: dyeing of acrylic fabrics C.I. Astrazon Basic Red 5BL 200%.

    Science.gov (United States)

    Kamel, M M; Helmy, H M; Mashaly, H M; Kafafy, H H

    2010-01-01

    The dyeing of acrylic fabrics using C.I. Astrazon Basic Red 5BL 200% has been studied with both conventional and ultrasonic techniques. The effect of dye concentration, dye bath pH, ultrasonic power, dyeing time and temperature were studied and the resulting shades obtained by dyeing with both techniques were compared. Colour strength values obtained were found to be higher with ultrasonic than with conventional heating. The results of fastness properties of the dyed fabrics were studied. X-ray and Scanning Electron Microscope SEM were carried out on dyed samples using both methods of dyeing to find out an explanation for the better dyeability of acrylic fabrics with (US) method. Dyeing kinetics of acrylic fabrics using C.I. Astrazon Basic Red 5BL 200% using conventional and ultrasonic conditions were compared. The time/dye-uptake isotherms are revealing the enhanced dye-uptake in the second phase of dyeing. The values of dyeing rate constant, half-time of dyeing and standard affinity and ultrasonic efficiency have been calculated and discussed.

  15. O fundamento como "fundamento ausente" nas ciências sociais: Heidegger, Derrida e Laclau

    Directory of Open Access Journals (Sweden)

    Daniel de Mendonça

    2016-04-01

    Full Text Available Neste artigo, refletimos teoricamente sobre o pós-fundacionalismo, corrente filosófica que influenciou o surgimento do pós-estruturalismo francês na segunda metade do século XX. De uma forma mais específica, nosso objetivo é discutir as implicações ontológicas, teóricas e epistemológicas da abordagem pós-fundacional para pesquisas em ciências sociais. Para tanto, cumprimos o seguinte percurso. Primeiramente, discorremos sobre o que chamamos de o Zeitgeist pós-fundacionalista, em especial a ênfase na diferença ontológica e no fundamento como Abgrund oriundos da obra de Martin Heidegger. A seguir, apresentamos a influência heideggeriana na reflexão filosófica pós-estruturalista de Jacques Derrida. Na sequência, discutimos a incorporação e a aplicação da ontologia heideggeriana na obra de Ernesto Laclau, principalmente a partir da discussão das noções de hegemonia e de populismo. Ao final, apresentamos nossas considerações acerca da importância do pós-fundacionalismo para pesquisas na área das ciências sociais.

  16. A nova convergência da ciência e da tecnologia

    Directory of Open Access Journals (Sweden)

    Esper A. Cavalheiro

    2007-07-01

    Full Text Available A ação sinérgica dos quatro campos científicos e tecnológicos que apresentaram crescimento acelerado nas últimas décadas - nanotecnologia, biotecnologia, tecnologias de comunicação e informação e ciências cognitivas (neurociência - tem sido intitulada Convergência Tecnológica. Este artigo faz uma revisão das principais discussões que vêm ocorrendo na comunidade científica internacional sobre o seu desenvolvimento e assinala a necessidade de uma abordagem mais ampla que inclua as ciências humanas e sociais e outros atores relevantes na sociedade contemporânea.The synergic combination of the scientific and technological fields that presented a rapid growth rate in the last few decades - nanotechnology, biotechnology, information and communication technologies, and cognitive science including neuroscience - is nowadays known as Convergent Technologies. This paper reviews its recent impact on the international scientific community and points out the need of amplifying the discussions to include humanities and social sciences and other important actors of contemporary society.

  17. Ultra wideband MC-CDMA and CI/MC-CDMA systems

    Science.gov (United States)

    Wu, Zhiqiang; Nassar, Carl R.

    2002-11-01

    Future-generation wireless communication systems, designed to support very-high-rate data services, will require ultra-wide frequency bands. However, the frequency spectrum is a very scarce resource and has (for the most part) already been allocated to different entities in small blocks. No one entity owns a contiguous ultra-wide bandwidth. Hence, any company seeking to create ultra-wide bandwidth communications will need to construct a system that operates over non-contiguous frequency bands. In this paper, we extend the MC-CDMA and CI/MC-CDMA architectures such that they operate over non-adjacent frequency bands. In this way, the MC-CDMA and CI/MC-CDMA systems support ultra-wideband communications by operating over a large set of non-contiguous frequency bands, where each band may be either unlicenced or appropriately licensed. Furthermore, we ensure that these proposed systems (1) exploit the full diversity benefits available over non-adjacent bands, maximizing performance, and (2) exploit the total bandwidth to maximize network capacity, as measured by number of users (per cell). Simulation results over typical multi-path fading channels confirm that these proposed systems not only support ultra-wideband communications over non-contiguous frequency bands, but outperforms similar systems over contiguous frequency bands (as a direct result of larger frequency diversity available).

  18. Aprendizagem baseada em problemas no ensino de ciências: Mudando atitudes de alunos e professores

    Directory of Open Access Journals (Sweden)

    João Manoel da Silva Malheiro

    2008-06-01

    Full Text Available O aprendizado baseado em problemas (APB é apontado como ferramenta importante para ensinar os alunos a aprender com autonomia. O objetivo deste trabalho é comparar a forma habitual de ensinar Ciências e Biologia no Ensino Médio da Escola Pública com a metodologia da Aprendizagem Baseada em Problemas (ABP. Para tanto, dois Cursos de Férias frequentados por alunos e professores do ensino médio foram baseados na ABP e dedicados à redescoberta da anatomia do corpo de animais com estilos de vida contrastantes. Foram feitas análises qualitativas e quantitativas a partir de questionários aplicados antes e depois dos cursos a alunos e professores. Os resultados apontaram para maior motivação dos alunos e professores em ciências e biologia após os cursos de férias e para a possibilidade da utilização imediata da metodologia no ensino médio na escola pública a despeito das restrições atuais de infra-estrutura.

  19. Filosofia da ciência como ferramenta microeconômica

    Directory of Open Access Journals (Sweden)

    Fabio Barbieri

    2009-06-01

    Full Text Available A teoria neoclássica pressupõe conhecimento perfeito. A crítica hayekiana a essa teoria, por sua vez, afirma que esse conhecimento é resultado do processo competitivo e, portanto, não pode ser considerado como dado. O “Problema de Hayek” investiga sob que condições o conhecimento do agente se aproxima dos reais fundamentos de uma economia. A fim de solucionar o “Problema de Hayek”, o nosso artigo utiliza algumas idéias da literatura de metodologia da Ciência, conhecida como teoria do “crescimento do conhecimento” (Popper, Kuhn, Lakatos e outros. Essas idéias são utilizadas para se compreender como evolui o conhecimento dos agentes econômicos, em especial o dos empresários. Estes são vistos como ativos formuladores de teorias empresariais conjecturais criticadas no processo competitivo, não como agentes passivos que maximizam funções já conhecidas da teoria convencional. Utiliza-se a Filosofia da Ciência não para analisar metodologicamente a microeconomia, mas, sim, como ferramenta analítica pertencente à própria teoria econômica.

  20. A cobertura de ciência em três jornais paraenses: um estudo longitudinal

    Directory of Open Access Journals (Sweden)

    Vanessa Brasil de Carvalho

    Full Text Available Resumo Neste artigo, apresentamos uma proposta metodológica visando realizar um estudo longitudinal que fornecesse um panorama da cobertura de ciência em 130 anos, por três jornais importantes do Estado do Pará: A Província do Pará (1876-2002, Folha do Norte (1896-1974 e O Liberal (1946-atual. Analisamos um período de dois meses a cada dez anos, de 1876 a 2006, em cada jornal selecionado, de maneira que obtivemos um olhar em longo prazo que perpassou pela história dos periódicos e, portanto, por grande parte da história da imprensa no Pará e na Amazônia. Utilizamos análise de conteúdo e análise de frames da Mídia. Nossos dados mostram que houve ênfase na pesquisa em saúde, destaque para a ciência nacional e preocupação em contextualizar os fatos científicos. Controvérsias e incertezas científicas ganharam pouco espaço nos jornais analisados.

  1. Wielokulturowość: lekcje przeszłości

    Directory of Open Access Journals (Sweden)

    Jan Surman

    2016-08-01

    Full Text Available Multiculturalism: lessons from the past Review: Understanding Multiculturalism. The Habsburg Central European Experience, ed. Johannes Feichtinger, Gary B. Cohen, Berghahn, Oxford–New York, 2014 (Austrian and Habsburg Studies 17, pp. 246 While recently the concept of multiculturalism has been an object of strong criticism from the political side, the book under review takes another turn scrutinizing and historicizing it. Looking at Central Europe through the lenses of nonessentialism, postcolonialism or national indifference, multiple authors propose not only new ways of reading the history of the region, but also of establishing categories for the future research in historical cultural studies.   Wielokulturowość: lekcje przeszłości Recenzja: Understanding Multiculturalism. The Habsburg Central European Experience, red. Johannes Feichtinger, Gary B. Cohen, Berghahn, Oxford–New York, 2014 (Austrian and Habsburg Studies 17, ss. 246. Podczas gdy koncept wielokulturowości był w ostatnim czasie obiektem mocnej krytyki, szczególnie ze strony polityki, recenzowana książka obiera inną pozycję, analizując i historyzując go. Spoglądając na Europe Środkową z użyciem nieesecjalizujących czy postkolonialnych koncepcji, autorzy proponują nie tylko nowe sposoby odczytania historii regionu, lecz także nowe kategorie dla przyszłych badań historii kulturowej.

  2. Ustawodawstwo Unii Europejskiej wobec mniejszości narodowych i etnicznych - casus romski

    Directory of Open Access Journals (Sweden)

    Wojciech Marcin Stankiewicz

    2014-12-01

    of the Roma minority and replace it with another. That is why the European Union should develop a range of mechanisms and measures that may be accepted by the Roma.   Ustawodawstwo Unii Europejskiej wobec mniejszości narodowych i etnicznych - casus romski Unia Europejska znajduje się dopiero na etapie tworzenia systemu ochrony mniejszości narodowych i etnicznych, jednak niezbędne będzie podjęcie wielu starań, debat oraz działań, w które koniecznie zaangażowane muszą być wszystkie państwa członkowskie. Próby podejmowane przez Parlament Europejski w celu poprawy sytuacji mniejszości narodowych i etnicznych w Unii Europejskiej mogą być odpowiednim impulsem do wstępnych refleksji. Pomimo wielu starań Unii Europejskiej oraz wykorzystania funduszy unijnych sytuacja mniejszości romskiej nie uległa dużej poprawie. Głównymi przyczynami są niedostateczne działania ze strony Unii Europejskiej, korupcja urzędników, a także brak zainteresowania społecznością romską państw członkowskich. Dotychczas podjęte działania nie przyniosły zamierzonych rezultatów, dlatego konieczne jest poświęcenie większej uwagi tej kwestii. Unia Europejska potrzebuje mocnego wsparcia innych instytucji unijnych oraz społeczeństwa obywatelskiego.

  3. Jaką teorią jest Marksowska teoria wartości opartej na pracy?

    Directory of Open Access Journals (Sweden)

    Krzysztof Nowak-Posadzy

    2015-12-01

    Full Text Available Tak zwana teoria wartości opartej na pracy (odtąd LTV, niegdyś powód do dumy całego środowiska marksistowskiego, stawała się z upływem lat przedmiotem jego zakłopotania. Jej odrzucenie w ramach tradycji lewicowej, zarówno przez część filozofów, jak i ekonomistów, wpisuje się w szersze zjawisko zwane „kryzysem marksizmu”. Wówczas to filozoficzna część środowiska marksistowskiego, chcąc uwolnić marksizm od wad „ekonomizmu”, odcięła go także od zalet mogących płynąć z przyjęcia perspektywy ekonomii teoretycznej. Natomiast część ekonomiczna przywołanego środowiska, chcąc uwolnić ekonomię marksistowską od niedociągnięć tkwiących w LTV, odcięła ją także od szczególnego statusu przypisywanego w tej tradycji intelektualnej pojęciu pracy. Chociaż uniewinniono później LTV od zarzutu o domniemaną logiczną sprzeczność, to jedynie po to, aby skazać ją następnie na zapomnienie za jej rzekomą zbyteczność. W niniejszym artykule omówiona zostanie specyfika Marksowskiej wersji LTV. We wstępie podane zostaną cztery jakościowe założenia, które, zdaniem autora, przesądzają o charakterze Marksowskiej wersji LTV, W pierwszej części zarysowane zostanie miejsce LTV w historii myśli ekonomicznej. Druga część dotyczyć będzie losów Marksowskiej wersji LTV w ramach samej tradycji marksistowskiej. W trzeciej części omówiony zostanie problem wartości i jej pomiaru. Czwarta część zostanie poświęcona analizie problemu pracy i wyboru jednostki jej pomiaru, a także próbie zrekonstruowania Marksowskiej teorii reprodukcji pracowników za pomocą pracy. W części piątej podjęta zostanie kwestia tego, jak interpretuje się współcześnie status metodologiczny marksowskiej wersji LTV. Artykuł kończy podsumowanie.

  4. Combination of rapamycin, CI-1040, and 17-AAG inhibits metastatic capacity of prostate cancer via Slug inhibition.

    Directory of Open Access Journals (Sweden)

    Guanxiong Ding

    Full Text Available Though prostate cancer (PCa has slow progression, the hormone refractory (HRCP and metastatic entities are substantially lethal and lack effective treatments. Transcription factor Slug is critical in regulating metastases of various tumors including PCa. Here we studied targeted therapy against Slug using combination of 3 drugs targeting 3 pathways respectively converging via Slug and further regulating PCa metastasis. Using in vitro assays we confirmed that Slug up-regulation incurred inhibition of E-cadherin that was anti-metastatic, and inhibited Bim-regulated cell apoptosis in PCa. Upstream PTEN/Akt, mTOR, Erk, and AR/Hsp90 pathways were responsible for Slug up-regulation and each of these could be targeted by rapamycin, CI-1040, and 17-AAG respectively. In 4 PCa cell lines with different traits in terms of PTEN loss and androgen sensitivity we tested the efficacy of mono- and combined therapy with the drugs. We found that metastatic capacity of the cells was maximally inhibited only when all 3 drugs were combined, due to the crosstalk between the pathways. 17-AAG decreases Slug expression via blockade of HSP90-dependent AR stability. Combination of rapamycin and CI-1040 diminishes invasiveness more potently in PCa cells that are androgen insensitive and with PTEN loss. Slug inhibited Bim-mediated apoptosis that could be rescued by mTOR/Erk/HSP90 inhibitors. Using mouse models for circulating PCa DNA quantification, we found that combination of mTOR/Erk/HSP90 inhibitors reduced circulating PCa cells in vivo significantly more potently than combination of 2 or monotherapy. Conclusively, combination of mTOR/Erk/Hsp90 inhibits metastatic capacity of prostate cancer via Slug inhibition.

  5. Deconstruyendo el modelo deficitario de la apropiación social de la ciencia y la tecnología en Colombia: el caso de la cartilla "Las Maticas de mi Huerta" Desconstruindo o modelo de déficit na apropriação social da ciência e tecnologia na Colômbia: o caso da cartilha " Las Maticas de mi Huerta" Deconstructing the deficit model of social appropriation of science and technology in Colombia: the case of the handbook "Las Maticas de mi Huerta"

    Directory of Open Access Journals (Sweden)

    Marcela Lozano-Borda

    2012-06-01

    Full Text Available Los estudios sobre política y actividades de apropiación social de ciencia y tecnología (ASCyT en Colombia han evidenciado la presencia de un modelo deficitario de relación entre el conocimiento científico y el público. Este modelo, que está presente en diversidad de actividades edu-comunicativas, se caracteriza por describir dinámicas de comunicación unidireccional y vertical de la ciencia hacia sus públicos. Estos estudios se han quedado cortos en identificar cuáles son las condiciones de producción que sostienen dicho modelo. Analizando el caso de una cartilla educativa, este artículo busca profundizar en la comprensión de aquello que define la ASCyT en Colombia como una práctica deficitaria. Lo anterior se logró desde un análisis de contenido etnográfico de este material educativo que permitió identificar una serie de dispositivos de lenguaje y gráficos que pueden a futuro servir de guía reflexiva para el diseño de otros materiales edu-comunicativos para la ASCyT.Estudos sobre políticas e atividades de apropriação social da ciência e tecnologia (ASCT na Colômbia têm mostrado a presença de um modelo de déficit de relação entre o conhecimento científico e o público. Este modelo, que está presente em diversas atividades educacionais e comunicativas, se caracteriza por estabelecer uma dinâmica de comunicação unidirecional e vertical da ciência para seus públicos. Contudo, estes estudos não têm identificado quais são as condições que sustentam este modelo de produção. Analisando o caso de uma cartilha educativa, este artigo procura aprofundar a compreensão sobre o que define a prática da ASCT na Colômbia como deficitária. Isto foi realizado a partir de uma análise de conteúdo etnográfico do material, a partir do qual foi possível identificar uma série de dispositivos de linguagem e de diagramação que no futuro podem servir como guia reflexiva para o desenho de novos materiais

  6. 40 CFR 721.9662 - Thieno[3,4-b]-1,4-dioxin, 2,3-dihydro- (9CI).

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Thieno -1,4-dioxin, 2,3-dihydro- (9CI... Substances § 721.9662 Thieno -1,4-dioxin, 2,3-dihydro- (9CI). (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as thieno -1,4-dioxin, 2,3-dihydro- (9CI) (PMN...

  7. Wykorzystanie informacji prospektywnychw sprawozdawczości finansowej zorientowanejna wartość na przykładzie MSR 36„Utrata wartości aktywów”

    Directory of Open Access Journals (Sweden)

    Irena Sobańska

    2009-12-01

    Full Text Available Autorzy artykułu wskazują na istotę i rosnące znaczenie informacji prospektywnych we współczesnych systemach sprawozdawczości finansowej opartej na MSSF. Ewolucja dokonująca się w sprawozdawczości finansowej, pod wpływem harmonizacji zasad rachunkowości wskutek ciągle zmieniających się MSSF, została przedstawiona na tle zmian dokonujących się w otoczeniu, w celach i w systemach zarządzania (orientacja strategiczna, wartość przedsiębiorstwa, jak również w systemach strategicznej rachunkowości zarządczej. Na podstawie szerokiego kontekstu analizy autorzy stawiają wniosek, że koncepcja wartości (przedsiębiorstwa stanowi istotny element systemu pomiaru i wyceny w systemie sprawozdawczości finansowej. Tworzy ona także spójną podstawę dla integracji rachunkowości zarządczej i rachunkowości finansowej w jeden system zapewniający użyteczne informacje zarówno dla użytkowników zewnętrznych, jak i wewnętrznych, których łączy wspólny cel – maksymalizacja wartości. Uwarunkowania tworzenia systemu sprawozdawczości opartego na informacjach prospektywnych, zorientowanego na wartość, jak również stopień dostosowania przedsiębiorstw do jego wdrożenia pokazano na przykładzie praktycznej realizacji postanowień MSR 36.

  8. Improving Vegetable Oil Fueled CI Engine Characteristics Through Diethyl Ether Blending

    KAUST Repository

    Vedharaj, S.

    2016-12-01

    In this research, the flow and ignition properties of vegetable oil (VO) are improved by blending it with diethyl ether (DEE). DEE, synthesized from ethanol, has lower viscosity than diesel and VO. When DEE is blended with VO, the resultant DEEVO mixtures have favorable properties for compression ignition (CI) engine operation. As such, DEEVO20 (20% DEE + 80% VO) and DEEVO40 (40% DEE + 60% VO) were initially considered in the current study. The viscosity of VO is 32.4*10−6 m2/s; the viscosity is reduced with the increase of DEE in VO. In this study, our blends were limited to a maximum of 40% DEE in VO. The viscosity of DEEVO40 is 2.1*10−6 m2/s, which is comparable to that of diesel (2.3*10−6 m2/s). The lower boiling point and flash point of DEE improves the fuel spray and evaporation for DEEVO mixtures. In addition to the improvement in physical properties, the ignition quality of DEEVO mixtures is also improved, as DEE is a high cetane fuel (DCN = 139). The ignition characteristics of DEEVO mixtures were studied in an ignition quality tester (IQT). There is an evident reduction in ignition delay time (IDT) for DEEVO mixtures compared to VO. The IDT of VO (4.5 ms), DEEVO20 (3.2 ms) and DEEVO40 (2.7 ms) was measured in IQT. Accordingly, the derived cetane number (DCN) of DEEVO mixtures increased with the increase in proportion of DEE. The reported mixtures were also tested in a single cylinder CI engine. The start of combustion (SOC) was advanced for DEEVO20 and DEEVO40 compared to diesel, which is attributed to the high DCN of DEEVO mixtures. On the other hand, the peak heat release rate decreased for DEEVO mixtures compared to diesel. Gaseous emissions such as nitrogen oxide (NOX), total hydrocarbon (THC) and smoke were reduced for DEEVO mixtures compared to diesel. The physical and ignition properties of VO are improved by the addition of DEE, and thus, the need for the trans-esterification process is averted. Furthermore, this blending strategy is simpler

  9. Escrevendo em aulas de ciências Writing in science classes

    Directory of Open Access Journals (Sweden)

    Carla Marques Alvarenga de Oliveira

    2005-12-01

    Full Text Available Neste artigo, apresentamos uma análise dos registros escritos dos alunos do 3° ano do Ensino Fundamental nas aulas de Ciências, em que a professora utilizou as atividades de conhecimento físico, criadas pelo Laboratório de Pesquisa e Ensino de Física da Faculdade de Educação da Universidade de São Paulo. Os registros analisados foram coletados na Escola de Aplicação da Feusp, no ano de 2001, durante o acompanhamento de três aulas de Ciências: o problema do submarino, o problema do barquinho e o problema da pressão. O artigo procura mostrar um panorama de como aparecem os registros realizados pelos alunos, após uma aula de Ciências em que eles são levados a resolver situações problemáticas por meio da experimentação, argumentar e escrever sobre os fenômenos físicos. Durante a análise, levou-se em consideração os tipos de textos que os alunos escrevem, o uso da primeira pessoa, o uso de verbos de ação, o respeito à ordem cronológica dos eventos e quais os tipos de explicações os alunos atribuem aos fenômenos trabalhados.This article analyzed the written records of Third Grade students of Elementary School at Escola de Aplicação, Universidade de São Paulo, gathered during the Science classes of the 2001 school year, in which activities about physical understanding were used. Created by the Laboratory of Research and Teaching of Physics - LAPEF, of the College of Education of USP, the activities "The Problem of the Submarine", "The Problem of the Little Boat" and "The Problem of the Pressure" required the students to solve problematic situations through experimentation, developing arguments and write about the phenomena. The study developed a framework of how the records are presented by the students, considering the types of texts they produce, the use of the first person, the use of verbs of action, the respect of the chronological order of events and the types of explanations the students give for the

  10. A relação de substancialidade na Ciência da Lógica

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    Greice Ane Barbieri

    2017-02-01

    Full Text Available O trabalho buscará apresentar a relação de substancialidade tal como exposta na Ciência da Lógica, de Hegel. Mas, antes dessa apresentação, cabem alguns comentários, de forma a enquadrá-la, grosso modo, dentro do sistema hegeliano, elucidando a sua função. Embora portadora de um título pretensamente formal, a Ciência da Lógica hegeliana não pode ser descrita como um manual de lógica: antes pelo contrário, a tal obra a classificação mais adequada é a de ser uma ontologia. Tendo tal característica, a lógica hegeliana baseia-se nos princípios que regem a realidade, tomando-os da própria realidade. Isso pode conferir à relação de substancialidade uma marcante importância dentro do encadeamento do sistema hegeliano da lógica e, mesmo, da filosofia real, uma vez que os pressupostos da lógica baseiam-se na reflexão sobre as categorias que foram, em última instância, retiradas do dado. Por outro lado, essas mesmas categorias contempladas na Ciência da Lógica colocam-se novamente na realidade, servindo para a compreensão dos engendramentos básicos dos avanços espirituais, isto é, as categorias da lógica hegeliana tornam-se essenciais para uma adequada compreensão de sua filosofia real. Desse modo, permeando o trabalho, de forma tênue, há o objetivo de deixar apontada a direção em busca do aspecto fenomenológico da substância, na Fenomenologia do Espírito, bem como o papel ético de tal conceito, enquanto unidade imediata, na Filosofia do Direito.

  11. Fałszywy znak równości

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    Efraim Zuroff

    2012-12-01

    Full Text Available The equivalency canard Efraim Zuroff's text, originally published in Haaretz magazine, is a review of Timothy Snyder's Bloodlands. Snyder distinguishes six main mass murders commited by Nazi Germany and Soviet Union during the period of the Third Reich's existence. In Zuroff's opinion there are some significant differences between these tragedies. Dubious comparisons proposed by Snyder made the Holocaust most affected. Describing the Shoah as one of the six equally horryfying mass murders, the author ignores its ideological roots. Roots that sentenced to death all Jews  - regardless of their political views, religious practicies or the level of identification with Jewish community. Moreover Snyder takes no notice of the georaphical scope of the Holocaust. He also does not notice the fact, that the Nazis effectively managed to make so many Europeans their accomplices, who actively supported the Shoah.   Fałszywy znak równości Tekst Efraima Zuroffa, który pierwotnie ukazał się w piśmie Haaretz, to recenzja książki Skrwawione ziemie Timothy Snydera. Snyder wyróżnia sześć głównych masowych mordów popełnionych przez Niemcy i Związek Radziecki w okresie, który odpowiada istnieniu Trzeciej Rzeszy. Istnieją jednak, zdaniem Zuroffa, znaczące różnice między tymi tragediami. Na wątpliwych porównaniach, które proponuje Snyder, najbardziej „ucierpiał” Holokaust. Opisując Shoah jako jeden z sześciu równie straszliwych, masowych mordów, autor pomija jego ideologiczne korzenie, które sprawiały, że na śmierć skazany był każdy bez wyjątku Żyd, niezależnie od jego poglądów politycznych, praktyk religijnych czy stopnia identyfikacji z żydowską wspólnotą. Ponadto Snyder ignoruje ogromny zasięg geograficzny Holokaustu. Nie zauważa także skuteczności, z jaką naziści potrafili uczynić swoimi wspólnikami tak wielu Europejczyków, którzy w konsekwencji aktywnie wspomagali Shoah.

  12. Solvent effects on photodegradation of CI Reactive Orange 16 by simulated solar light

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    Mijin Dušan Ž.

    2008-01-01

    Full Text Available Organic solvents may appear in wastewaters and other industrial waste streams containing dyes, therefore, their photodegradation catalyzed by TiO2 should be investigated. Solvent effect on photodegradation of CI Reactive Orange 16 has been studied using simulated solar light and P-25 TiO2. Methyl, ethyl and isopropyl alcohol as well as acetone were used as solvents. Photodegradation reaction was faster in methyl than in ethyl alcohol while in water was the slowest. RO16 photodegradation efficiency and reaction rate decreased in the presence of small concentration of ethanol. Higher photodegradation efficiency was observed for higher ethanol concentration. For acetone, photodegradation decreased as concentration of acetone increased. It seems that protic solvents at higher concentrations promote reaction, while at low concentrations slow down reaction. Aprotic solvents slow down reaction.

  13. Interação entre Religião e Ciência em Paracelso

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    Martinho Antônio Bittencourt de Castro

    2017-02-01

    Full Text Available Neste artigo, considerou-se oportuno rever as concepções de Paracelso para melhor compreender de que forma o mesmo entendeu a relação entre ciência e religião, o que implica abordar um método do conhecimento radicalmente diferente do método científico moderno. Em Paracelso, na pesquisa científica, a razão deve dar lugar a uma espécie de intuição mística. Mas para ser consistente tal abordagem deve admitir uma concepção panteísta do mundo semelhante a que foi adotada pelos Estoicos.

  14. Miguel de Unamuno. Pomiędzy fikcją a rzeczywistością

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    Agnieszka Kłosińska-Nachin

    2007-11-01

    Full Text Available The article Miguel de Unamuno. Pomiędzy fikcją a rzeczywistością (Miguel de Unamuno. Between fiction and reality is an author's metalepsy analysis, a phenomenon described by Gerard Cenette (Mśtalepse. De la figurę k la fiction, 2004, in three texts by Miguel de Unamuno: Vida de Don Quijote y Sancho (1905, Niebla (1914 and Cómo se hace una novela (1927. Author's metalepsy, defined as transgression of the limits of fiction by an author, existentional metalepsy (understood as a vision of the world based on doubt, concerning the status of reality and reader's metalepsy (if he’s forced to transgression of the limits of fiction are the inseparable parts of Unamuno's writing.

  15. A Computational Intelligence (CI) Approach to the Precision Mars Lander Problem

    Science.gov (United States)

    Birge, Brian; Walberg, Gerald

    2002-01-01

    A Mars precision landing requires a landed footprint of no more than 100 meters. Obstacles to reducing the landed footprint include trajectory dispersions due to initial atmospheric entry conditions such as entry angle, parachute deployment height, environment parameters such as wind, atmospheric density, parachute deployment dynamics, unavoidable injection error or propagated error from launch, etc. Computational Intelligence (CI) techniques such as Artificial Neural Nets and Particle Swarm Optimization have been shown to have great success with other control problems. The research period extended previous work on investigating applicability of the computational intelligent approaches. The focus of this investigation was on Particle Swarm Optimization and basic Neural Net architectures. The research investigating these issues was performed for the grant cycle from 5/15/01 to 5/15/02. Matlab 5.1 and 6.0 along with NASA's POST were the primary computational tools.

  16. História e Ciências Sociais: a longa duração

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    Fernand Braudel

    1965-06-01

    Full Text Available Há uma crise geral nas ciências do homem: estão tôdas elas esmagadas pelos seus próprios progressos, isto em razão do acúmulo de novos conhecimentos e pela necessidade de um trabalho coletivo, cuja organização inteligente está ainda por es-tabelecer; direta ou indiretamente, tôdas, das mais ágeis dentre elas, são atingidas, quer queiram ou não, pelos progressos, mas permanecem, no entanto, ligadas a um humanismo retrógrado, insidioso, que não lhes pode mais servir de quadro. Tôdas, com mais ou menos lucidez, preocupam-se com seu lugar no conjunto monstruoso das pesquisas antigas e novas, cuja convergência necessária se adivinha atualmente.

  17. Mensurações em ciência Measurements in science

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    Harley Edson Amaral Bicas

    2003-08-01

    Full Text Available A natureza da mensuração, terminologias e importância de seus usos em ciência são comentados quanto a sistemas numéricos, representações logarítmicas, unidades (com aplicações a medidas do índice de refração, acuidade visual e ângulos, ordens de grandeza, escalas, sensibilidades, leituras e interpolações, algarismos significativos, precisão e exatidão, fidedignidade e significância (clínica e estatística.The nature of mensurations, terminologies and the importance of their uses are commented regarding numerical systems, logarithmic representations, units (with applications to measurements of the index of refraction, visual acuity and angles, orders of magnitude, scales, sensitivity, instrumental readings and interpolations, significant digits, precision and accuracy, reliability and significance (clinical and statistical.

  18. A canção popular "O ciúme" de Caetano Veloso

    OpenAIRE

    Alexandre, Kleber

    2006-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-Graduação em Literatura. Este trabalho tem como objetivo investigar a maneira como os elementos que constituem a canção popular se articulam. A canção escolhida para a pesquisa é "O ciúme" de Caetano Veloso. Relações entre melodia e letra; relações entre harmonia tonal e presença de harmonia modal; características da obra de Caetano Veloso como presença de escalas modais e re...

  19. A comunicação nas ciências da linguagem

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    Geraldo Carlos do Nascimento

    2002-06-01

    Full Text Available Este trabalho situa a questão da comunicação na sua vertente relacionada com as ciências da linguagem, que ganham corpo, embora suas origens remontem a Saussure, a partir do ensaio de Roman Jakobson, Linguistic and Poetics (1960, no qual é apresentado um esquema básico da comunicação. As fragilidades deste esquema, ainda vinculado às noções da sociologia funcionalista (Laswell/Scharam, logo se fizeram notar, particularmente no que se refere à sua operacionalização; mas foi a partir de sua crítica, conforme se defende aqui, que a semiótica greimasiana pôde, ao articular comunicação e sentido, estabelecer bases mais consistentes para a discussão da noção de comunicação e se seu campo presumível.

  20. Uwarunkowania rozwoju przedsiębiorczości na przykładzie miasta Szczecin

    OpenAIRE

    Klóska, Rafał

    2005-01-01

    W artykule sprecyzowano czynniki determinujące powstawanie przedsiębiorstw w Szczecinie i scharakteryzowano wybrane działania władz lokalnych na rzecz rozwoju przedsiębiorczości w mieście. Liczba ponad 60 tys. przedsiębiorstw prowadzących działalność gospodarczą w Szczecinie wydaje się być wystarczająca dla tej aglomeracji. Dalsze zakładanie i funkcjonowanie mikro i małych przedsiębiorstw zależy nie tylko od szans i zagrożeń stwarzanych przez rynek, lecz także od pomocy i wsparcia udzielanego...

  1. Photocatalytic Membrane Reactor for the Removal of C.I. Disperse Red 73

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    Valentina Buscio

    2015-06-01

    Full Text Available After the dyeing process, part of the dyes used to color textile materials are not fixed into the substrate and are discharged into wastewater as residual dyes. In this study, a heterogeneous photocatalytic process combined with microfiltration has been investigated for the removal of C.I. Disperse Red 73 from synthetic textile effluents. The titanium dioxide (TiO2 Aeroxide P25 was selected as photocatalyst. The photocatalytic treatment achieved between 60% and 90% of dye degradation and up to 98% chemical oxygen demand (COD removal. The influence of different parameters on photocatalytic degradation was studied: pH, initial photocatalyst loading, and dye concentration. The best conditions for dye degradation were pH 4, an initial dye concentration of 50 mg·L−1, and a TiO2 loading of 2 g·L−1. The photocatalytic membrane treatment provided a high quality permeate, which can be reused.

  2. Partnerstwo publiczno – prywatne w świetle Krajowego Standardu Rachunkowości nr 10

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    Dorota Adamek-Hyska

    2017-09-01

    Full Text Available Partnerstwo publiczno – prywatne w świetle Krajowego Standardu Rachunkowości nr 10 In Poland, the concept of public-private partnership generates many dilemmas in valuation, accounting records and the reporting of essential assets and liabilities. This issue is addressed by National Accounting Standard No. 10, which outlines the principles of PPP accounting in public and private accounting systems. The purpose of this paper is to analyze and evaluate the solutions adopted in National Accounting Standard No. 10 against the background of synthetic PPP characteristics. The research methods used are based on a critical analysis of national legislation, a comparative analysis of national and international accounting standards, and a literature analysis of public-private partnerships, public finances and financial accounting. The paper uses the conclusions from the observations of financial aspects of selected public-private partnership contracts as well as concession contracts for construction works and services in Poland

  3. WERYFIKACJA MOŻLIWOŚCI ZASTOSOWANIA WSKAŹNIKA ITS DO OCENY STANU TROFICZNEGO ZBIORNIKA DOBCZYCKIEGO

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    Elena NEVEROVA-DZIOPAK

    2016-05-01

    Full Text Available W ostatnich latach problem eutrofizacji stał się powszechny nie tylko w wodach stojących ale także w płynących. Budzi on spore zainteresowanie zwłaszcza gdy zaczyna dotyczyć wód przeznaczonych do zaopatrzenia ludzi w wodę do spożycia. Zbiornik Dobczycki o którym traktuje artykuł jest właśnie takim rezerwuarem. Tu ujmowana jest woda dla mieszkańców Krakowa. W literaturze spotyka się stwierdzenia, że wody zbiornika zawsze były podatne na eutrofizację ze względu na ładunki biogenów które są wnoszone do niego przez Rabę. Problem oceny stopnia eutrofizacji Zbiornika Dobczyckiego został więc podjęty nie tyle ze względów poznawczych, co utylitarnych. Wymagał rzetelnej i szczegółowej analizy danych pomiarowych pochodzących z monitoringu. Do oceny zjawiska eutrofizacji wykorzystano integralny wskaźnik troficzności ITS. Jest on jednym z coraz powszechniej stosowanych obecnie zagregowanych wskaźników. Dostrzeżono że graniczne wartości pojedynczych parametrów niekoniecznie odzwierciedlają stan trofii i uprawniają do wnioskowania o zjawisku eutrofizacji. Zastosowanie wskaźnika ITS wiąże się z wykorzystaniem parametrów takich jak pH i nasycenie wody tlenem, które odzwierciedlają bilans gazowy w wodach, zmieniający się wraz ze zmianą bilansu procesów produkcji i rozkładu materii organicznej. Nie wymaga on więc szczegółowych oznaczeń monitoringowych, przez co może być wykorzystywany jako uniwersalny sposób oceny trofii. W artykule uzasadniono wybór wskaźnika ITS jako metody oceny trofii na podstawie analizy statystycznej danych monitoringu Zbiornika pochodzących z okresu wieloletniego. Uwiarygodniło to ocenę i pozwoliło dostrzec pewne prawidłowości procesu oraz jego dynamikę. Na jej podstawie możliwa jest prognoza prawdopodobnego scenariusza dalszego rozwoju zjawiska. Utrzymujący się w minionych 15 latach stan pograniczny zaawansowanej mezotrofii/eutrofii przy jednoczesnej dobrej

  4. Uma abordagem sociológica da sociologia: a ciência como campo

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    Vívian Matias dos Santos

    2012-03-01

    Full Text Available O presente ensaio objetiva analisar como o conceito de campo de Pierre Bourdieu pode contribuir para uma abordagem sociológica da Sociologia. A discussão desdobra-se desde a reflexão mais geral de como se firma a ciência até as possibilidades de compreensão da Sociologia neste espaço. Para tanto, fez-se necessário abordar o “campo científico” por meio das relações entre sua estrutura e seus agentes - relações “multidimensionais” que podem representar uma exitosa tentativa de superação da dicotomia ação/estrutura; indivíduo/sociedade; micro e macroteorização.

  5. O vidro na ciência e na arte : discursos partilhados

    OpenAIRE

    Monteiro, Paulo António da Costa

    2007-01-01

    O presente trabalho pretende contribuir para o entendimento das relações entre a Arte e a Ciência através dos objectos e técnicas do vidro, criados e desenvolvidas ao longo dos séculos pelos artistas numa busca do aperfeiçoamento e da expressão. A evolução do vidro ao longo de 5000 anos vem no sentido da adaptação às solicitações técnicas colocadas pelos criadores de objectos em vidro que no reconhecimento das suas propriedades físicas como dureza, resistência, condutibilida...

  6. Alantoina – właściwości gojące i przeciwzapalne

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    Elżbieta Szymańska

    2012-04-01

    Full Text Available Alantoina jest pochodną mocznika wykazującą działanie keratolityczne poprzez oddziaływanie na desmoso‑ my, które stanowią połączenia pomiędzy korneocytami. Dzięki takiemu działaniu alantoina pozwala pozbyć się nadmiaru zrogowaciałego naskórka. Równocześnie poprzez stymulowanie podziałów komórkowych i epiteli‑ zacji przyspiesza odnowę uszkodzonego procesem zapalnym naskórka. Alantoina dodatkowo ma właściwości silnie nawilżające oraz wykazuje wysokie bezpieczeństwo terapii – nie alergizuje, nie powoduje podrażnienia skóry. Ze względu na wymienione właściwości alantoina ma szerokie zastosowanie w kosmetyce i farmacji. Jest składnikiem wielu preparatów przeznaczonych dla skóry suchej, trądzikowej lub alergicznej. Ponadto jest czę‑ stym składnikiem preparatów po opalaniu, dezodorantów, szamponów, płynów do kąpieli i przede wszystkim miejscowych leków dermatologicznych. Alantoina zawarta w maści czy kremie przyspiesza proces złuszcze‑ nia się martwych komórek naskórka, sprawiając, że skóra staje się gładsza. Dzięki właściwościom przyspiesza‑ jącym proliferację komórek nabłonka alantoina przyspiesza odbudowę naskórka, dzięki czemu skóra znacznie łatwiej zachowuje większą ilość wody oraz odbudowuje ochronny płaszcz hydrolipidowy, ustępują także dokucz‑ liwe subiektywne objawy towarzyszące suchości skóry, przede wszystkim uczucie napięcia i pieczenia. Prepara‑ ty zawierające alantoinę polecane są również wspomagająco w terapii chorób skóry przebiegających z zaburze‑ niem rogowacenia lub uszkodzeniem naskórka, takich jak atopowe zapalenie skóry, wyprysk kontaktowy, łuszczyca, rybia łuska, owrzodzenia czy oparzenia. Uzupełniająca terapia zewnętrzna preparatami zawierają‑ cymi alantoinę znacznie łagodzi objawy chorobowe i tym samym poprawia komfort życia pacjenta.

  7. Globalização: novo paradigma das ciências sociais

    OpenAIRE

    Ianni,Octavio

    1994-01-01

    As ciências sociais estão sendo desafiadas a pensar a globalização do mundo. No fim do século XX, quando se anuncia o XXI, elas se defrontam com os dilemas que se abrem com a globalização das coisas, gentes e idéias. Há processos e estruturas sociais, econômicos, políticos, culturais e outros que apenas começam a ser estudados. Além do que é local, nacional e regional, colocam-se problemas novos e fundamentais com a emergência da sociedade global. As fronteiras geográficas e históricas, cultu...

  8. Three Voices about the Book by Włodzimierz Bolecki Modalności modernizmu (Modalities of Modernism

    Directory of Open Access Journals (Sweden)

    Marta Wyka

    2014-01-01

    Full Text Available The text is a commentary on the book Modalności modernizmu (“Modalities of Modernism” by Włodzimierz Bolecki which is regarded here as a pioneer synthesis. The authors bring attention to Bolecki’s model of thinking about Central and Eastern European modernism and ponder about the new perspectives that this model opens up. Special emphasis is put on the questions of methodology and training of a new generation of interpreters who should be equipped with the competences essential for conducting this type of research. Also, the attention is brought to cognitive benefits resulting from the perspective combining the description of the typical features of not only Polish modernism but also the Modernisms of the countries of Central and Eastern Europe, and especially, which is ever more evident in this context, not self-evident, unique character of Polish literature of the 19th and 20th centuries and the Polish turn towards modern culture in the studies of the recent decades. A broader presentation of a regional perspective which is suggested in the book by Bolecki, could help to explain the empty space on the map of parallel transformations in close, and yet individually different countries of the region, forcing us to revise our previous ways of thinking about literature and culture of modernism, as well as the languages of its description.

  9. Doświadczenie deportacji: Przemoc orężem suwerenności

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    Agnieszka Radziwinowiczówna

    2016-09-01

    Full Text Available Literatura dotycząca nowoczesnej państwowości wskazuje, iż zarówno deportacje, jak i sama możliwość ich dokonania, czyli deportowalność migrantów, wytwarzają suwerenność w obliczu niezgodnych z prawem międzynarodowych migracji, które postrzegane są jako „utrata kontroli”. W artykule podejmuje się, przy użyciu koncepcji „państwa jako przeżywanego doświadczenia”, próbę dialektycznego połączenia teorii dotyczących państwowej suwerenności z indywidualnym doświadczeniem osób deportowanych. Autorka, bazując na zebranych w Meksyku narracjach byłych deportowanych ze Stanów Zjednoczonych, opisuje, jak kontinuum przemocy doświadczanej przez migrantów w trakcie i po deportacji rekonstruuje amerykańską suwerenność w miejscu pozalegalnej strefy wytworzonej wraz z ich „nielegalnym” przekroczeniem granicy terytorium państwa amerykańskiego. W państwach narodowych przemoc wobec deportowanych odtwarza symboliczną granicę wspólnoty narodowej, natomiast nieobywateli dyscyplinuje, wytwarzając potrzebną suwerenowi rządomyślność. Ma ona transnarodowy charakter, bowiem bolesne doświadczenie deportowanych może ich zniechęcać do powrotu do Stanów Zjednoczonych oraz powstrzymywać niemigrantów przed „nielegalną” migracją.

  10. Historiografia e natureza da ciência na sala de aula

    Directory of Open Access Journals (Sweden)

    Thaís Cyrino de Mello Forato

    2011-01-01

    Full Text Available http://dx.doi.org/10.5007/2175-7941.2011v28n1p27 Este trabalho discute alguns desafios previstos na confluência de prescrições da historiografia, da epistemologia e da didática da ciência mediante seus respectivos referentes teóricos, para a construção dos saberes escolares voltados à escola básica.  Discute-se, inicialmente, a escolha do tipo de abordagem da natureza da ciência visando propiciar os benefícios pedagógicos para a formação dos professores e estudantes propostos pela literatura educacional. Apresenta-se, a seguir, os requisitos da historiografia atual destacando as distorções históricas mais corriqueiras, bem como os processos de construção dos saberes escolares postos pela transposição didática. Finalmente, discute-se a análise teórica que confrontou essas distintas exigências apontando alguns obstáculos a serem enfrentados para o uso de conteúdos histórico-epistemológicos na educação científica. Permeando o estudo, defende-se que evitar o uso da pseudo-história, ou mesmo possuir certa fundamentação teórica para problematizá-la, representa, prioritariamente, um compromisso com a formação do aluno.

  11. The functional significance of cortical reorganization and the parallel development of CI therapy

    Directory of Open Access Journals (Sweden)

    Edward eTaub

    2014-06-01

    Full Text Available For the 19th and the better part of the 20th centuries two correlative beliefs were strongly held by almost all neuroscientists and practitioners in the field of neurorehabilitation. The first was that after maturity the adult CNS was hardwired and fixed, and second that in the chronic phase after CNS injury no substantial recovery of function could take place no matter what intervention was employed. However, in the last part of the 20th century evidence began to accumulate that neither belief was correct. First, in the 1960s and 1970s, in research with primates given a surgical abolition of somatic sensation from a single forelimb, which rendered the extremity useless, it was found that behavioral techniques could convert the limb into an extremity that could be used extensively. Beginning in the late 1980s, the techniques employed with deafferented monkeys were translated into a rehabilitation treatment, termed Constraint Induced Movement therapy or CI therapy, for substantially improving the motor deficit of the upper and lower extremities in the chronic phase after stroke. CI therapy has been applied successfully to other types of damage to the CNS such as traumatic brain injury, cerebral palsy, multiple sclerosis, and spinal cord injury, and it has also been used to improve function in focal hand dystonia and for aphasia after stroke. As this work was proceeding, it was being shown during the 1980s and 1990s that sustained modulation of afferent input could alter the structure of the CNS and that this topographic reorganization could have relevance to the function of the individual. The alteration in these once fundamental beliefs has given rise to important recent developments in neuroscience and neurorehabilitation and holds promise for further increasing our understanding of CNS function and extending the boundaries of what is possible in neurorehabilitation.

  12. A Science Centre as a Geoturism promoter - the Lagos Ciência Viva examples (Portugal).

    Science.gov (United States)

    Azevedo Rodrigues, Luis; Leote, Catarina

    2017-04-01

    Science outreach and engagement are crucial core objectives of the Lagos Ciência Viva Science Centre (CCVL). By engaging audiences in the real world a link is made between their science centre experience and the environment in which they live. Therefore, it has been an option of the CCVL to offer geological outdoor activities, both in the natural environment and urban context. Dinosaurs are an appealing science subject for both students and tourists. Thus, the CCVL has a long tradition in organizing and guiding field trips to two dinosaur track sites - Salema and Santa beaches (Vila do Bispo, southwest Algarve). These sites, both from the Lower Cretaceous reveal at least two types of tracks - theropod and iguanodontian footprints. Often in combination with the paleontology field trips, the CCVL also offers different geological field trips both for formal (school) and informal (tourism) education. This allows students and tourists to be introduced to dinosaur paleobiology and ichnology and to the structural geology and stratigraphy of the area. Our science outreach is being further developed by contractual agreement with a regional tour operator, in which the CCVL is responsible for the scientific content and guidance of the visits. Aiming at an urban context, the CCVL produced three Urban Geology and Paleontology Guide Books for three Algarve cities (Lagos, Faro and Tavira), which can be acquired in the three Ciência Viva Science Centres shops as well as in the tourist information offices serving this way as a basis for guided urban tours also offered by the CCVL. Based on our experience, we review and contextualise these geoscience activities and their potential for science outreach, communication and tourism. We discuss and propose a classification of different possibilities in geoscience communication and outreach based on three vertices: Science, Heritage and Geotourism. Some particularities of these visits, such as the merge between geosciences and other

  13. Sprawozdawczość zintegrowana jako nowy obszar badań naukowych w rachunkowości

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    Joanna Krasodomska

    2015-06-01

    Full Text Available Celem artykułu jest przedstawienie sprawozdawczości zintegrowanej jako interesującego, nowego obszaru badań naukowych w rachunkowości. Zakłada ona publikację raportu prezentującego, jak przyjęte przez przedsiębiorstwo strategia, zasady zarządzania, wyniki działalności i perspektywy rozwoju prowadzą do tworzenia wartości. W artykule omówiono stanowiące podstawę sprawozdawczości zintegrowanej koncepcje modelu biznesu oraz sześciu kapitałów. Na podstawie dokonanego przeglądu literatury przedstawiono kierunki badań z zakresu sprawozdawczości zintegrowanej, prezentowane w artykułach naukowych indeksowanych w bazach EBSCO i Emerald oraz postulowane przez Międzynarodową Radę ds. Zintegrowanej Sprawozdawczości (International Integrated Reporting Council – IIRC we współpracy ze Stowarzyszeniem Dyplomowanych Biegłych Księgowych (Association of Chartered Certified Accountants – ACCA i Międzynarodowym Stowarzyszeniem Edukacji Rachunkowości i Badań (International Association for Accounting Education & Research – IAAER. Wskazano też tematy opracowań podejmujących ten problem, przyjętych do prezentacji na Kongresie Europejskiego Stowarzyszenia Rachunkowości (European Accounting Association – EAA w Glasgow w kwietniu 2015 r. Analizą objęto również dorobek polskich autorów podejmujących w swoich badaniach problematykę sprawozdawczości zintegrowanej. Przegląd literatury dotyczącej sprawozdawczości zintegrowanej oraz obecnie prowadzonych badań pozwolił na zidentyfikowanie luk badawczych i wskazanie problemów wartych naukowych dociekań. Zaliczono do nich m.in. zagadnienia związane z modelem biznesu, koncepcją wartości, sześcioma kapitałami, jakością i istotnością raportów zintegrowanych, zaspokajaniem przez raporty zintegrowane potrzeb informacyjnych użytkowników oraz rolą księgowych i biegłych rewidentów w opracowywaniu i weryfikacji sprawozdawczości zintegrowanej. 

  14. Structural and dynamics studies of a truncated variant of CI repressor from bacteriophage TP901-1

    DEFF Research Database (Denmark)

    Rasmussen, Kim Krighaar; Frandsen, Kristian E. H.; Erba, Elisabetta Boeri

    2016-01-01

    The CI repressor from the temperate bacteriophage TP901-1 consists of two folded domains, an N-terminal helix-turn-helix DNA-binding domain (NTD) and a C-terminal oligomerization domain (CTD), which we here suggest to be further divided into CTD1 and CTD2. Full-length CI is a hexameric protein...

  15. Gry w podmiot. Szkic o (wczesnej twórczości Mladena Stilinovicia

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    Magdalena Bogusławska

    2016-10-01

    Full Text Available Games of a subject: A sketch of the (early works of Mladen Stilinović The article concerns the conceptualization of the subject in the works of the contemporary Croatian visual artist Mladen Stilinović. The object of analysis are most of all works (collages, texts from the 1970s and early 1980s, when the artist formulated the basis for his creative philosophy and at the same time determined the directions of their research. His system of reference were the socialist state order and the traditionalist, academic system of artistic practice, which he criticized from the perspectives of Diogenes, philosophical Cynicism and constructive anarchism. Until this day, the attitude of resistance is the main creative principle for Stilinović’s art. He sets strong, conscious and autonomous creator’s “I” against symbolic violence of different systems (political, ideological, educational, etc.. This “I” is not so much the material and object of expression as a space of play based on concpetualism and self-irony.   Gry w podmiot. Szkic o (wczesnej twórczości Mladena Stilinovicia Artykuł dotyczy konceptualizacji podmiotu w twórczości współczesnego chorwackiego artysty wizualnego – Mladena Stilinovicia. Przedmiotem analizy są przede wszystkim prace (kolaże, teksty z lat 70. i początku 80. XX wieku, kiedy to artysta formułował podstawy filozofii twórczej i określał kierunki swych poszukiwań. Układem odniesienia były dla niego wówczas socjalistyczny porządek państwa i tradycjonalistyczny, akademicki system praktyki artystycz­nej, które poddawał konsekwentnej krytyce z pozycji rozumnego, diogenesowskiego cynizmu i konstruktywnego anarchizmu. Do dziś postawa oporu jest dla Stilinovicia podstawową zasadą twórczą. Przemocy symbolicznej wszelkich systemów (politycznych, ideologicznych, edukacyjnych itp. przeciwstawia mocne, świadome i niezależne „ja” twórcy. Jest tu ono nie tyle tworzywem i przedmiotem ekspresji

  16. Comets as Parent Bodies of CI1 Carbonaceous Meteorites and Possible Habitats of Ice-Microbiota

    Science.gov (United States)

    Wickramasinghe, N. Chandra; Wallis, Daryl H.; Rozanov, Alexei Yu.; Hoover, Richard B.

    2011-01-01

    Recent studies of comets and cometary dust have confirmed the presence of biologically relevant organic molecules along with clay minerals and water ice. It is also now well established by deuterium/hydrogen ratios that the CI1 carbonaceous meteorites contain indigenous extraterrestrial water. The evidence of extensive aqueous alteration of the minerals in these meteorites led to the hypothesis that water-bearing asteroids or comets represent the parent bodies of the CI1 (and perhaps CM2) carbonaceous meteorites. These meteorites have also been shown to possess a diverse array of complex organics and chiral and morphological biomarkers. Stable isotope studies by numerous independent investigators have conclusively established that the complex organics found in these meteorites are both indigenous and extraterrestrial in nature. Although the origin of these organics is still unknown, some researchers have suggested that they originated by unknown abiotic mechanisms and may have played a role in the delivery of chiral biomolecules and the origin of life on Early Earth. In this paper we review these results and investigate the thermal history of comets. We show that permanent as well as transient domains of liquid water can be maintained on a comet under a plausible set of assumptions. With each perihelion passage of a comet volatiles are preferentially released, and during millions of such passages the comet could shed crustal debris that may survive transit through the Earth s atmosphere as a carbonaceous meteorite. We review the current state of knowledge of comets and carbonaceous meteorites. We also present the results of recent studies on the long-term viability of terrestrial ice-microbiota encased in ancient glacial ice and permafrost. We suggest that the conditions which have been observed to prevail on many comets do not preclude either survivability (or even the active metabolism and growth) of many types of eukaryotic and prokaryotic microbial

  17. Globalização: novo paradigma das ciências sociais

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    Octavio Ianni

    1994-08-01

    Full Text Available As ciências sociais estão sendo desafiadas a pensar a globalização do mundo. No fim do século XX, quando se anuncia o XXI, elas se defrontam com os dilemas que se abrem com a globalização das coisas, gentes e idéias. Há processos e estruturas sociais, econômicos, políticos, culturais e outros que apenas começam a ser estudados. Além do que é local, nacional e regional, colocam-se problemas novos e fundamentais com a emergência da sociedade global. As fronteiras geográficas e históricas, culturais e civilizatórias parecem modificar-se em direções e formas surpreendentes. Indivíduo, grupo, classe, coletividade e povo são colocados diante de outros horizontes. O próprio pensamento científico é desafiado a elaborar conceitos e interpretações para dar conta de realidades pouco conhecidas. As teorias da globalização, que começam a ser esboçadas, revelam o empenho das ciências sociais em explicar o que há de novo no que vai pelo mundo.Social sciences are now being challenged to think on the world's globalization. At the end of the twentieth century and dawn of the twenty first, they are faced with the dilemas that open up with the globalization of things, people and ideas: There are social, economical, political, cultural and other processes and structures that are just begining to be studied. Besides what is local, national and regional, new and fundamental problems appear with the rising global society. The geographic, historical, cultural and civilizatorian limits seem to change in surprising ways and directions. The individual, group, class, colectivity and people are put before other horizons. The scientific thinking itself is called upon to elaborate concepts and interpretations to account for little known realities. The globalization theories that are just being sketched show the efforts of Social Sciences to explain what is new going on in the world.

  18. Problema, teoria e observação em ciência: para uma reorientação epistemológica da educação em ciência

    Directory of Open Access Journals (Sweden)

    João Felix Praia

    2002-01-01

    Full Text Available Trabalhos recentes de investigação sugerem que freqüentemente os professores de ciências constroem imagens de ciência marcadas por visões de índole empirista/indutivista. O presente artigo desenvolve-se em torno de contributos da epistemologia, numa perspectiva de transposição para o campo da Educação em Ciência, isto é, centra a nossa atenção na busca e apropriação crítica de elementos fundamentadores de uma teorização para a Educação em Ciência, por sua vez, também ela capaz de orientar práticas educacionais. É com naturais limitações, decorrentes ainda do actual estatuto epistemológico da Educação em Ciência que procuramos desenvolver um conjunto de idéias sobre aspectos tão importantes como o problema, a teoria e a observação em Ciência, capazes de contribuir para que os professores se sintam mais informados e, por via disso, sejam mais capazes de fundamentar as suas opções educacionais e didácticas em relação à ciência que ensinam.

  19. Multicentre evaluation of the Naída CI Q70 sound processor: feedback from cochlear implant users and professionals

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    Jeanette Martin

    2016-12-01

    Full Text Available The aim of this survey was to gather data from both implant recipients and professionals on the ease of use of the Naída CI Q70 (Naída CI sound processor from Advanced Bionics and on the usefulness of the new functions and features available. A secondary objective was to investigate fitting practices with the new processor. A comprehensive user satisfaction survey was conducted in a total of 186 subjects from 24 centres. In parallel, 23 professional questionnaires were collected from 11 centres. Overall, there was high satisfaction with the Naída CI processor from adults, children, experienced and new CI users as well as from professionals. The Naída CI processor was shown as being easy to use by all ages of recipients and by professionals. The majority of experienced CI users rated the Naída CI processor as being similar or better than their previous processor in all areas surveyed. The Naída CI was recommended by the professionals for fitting in all populations. Features like UltraZoom, ZoomControl and DuoPhone would not be fitted to very young children in contrast to adults. Positive ratings were obtained for ease of use, comfort and usefulness of the new functions and features of the Naída CI sound processor. Seventy-seven percent of the experienced CI users rated the new processor as being better than their previous sound processor from a general point of view. The survey also showed that fitting practices were influenced by the age of the user.

  20. A reconstrução da realidade nas Ciências Sociais

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    Florestan Fernandes

    2004-07-01

    Full Text Available Nota dos editores: O artigo "A reconstrução da realidade nas Ciências Sociais" foi publicado originalmente em duas partes. A primeira apareceu no número 82 da Revista Anhembi conforme a nota explicativa do texto. A segunda parte foi publicada no número 83 da mesma Revista, que saiu no mês de outubro de 1957. As duas partes do artigo foram publicadas como um capítulo do livro de Florestan Fernandes, "Fundamentos Empíricos da Explicação Sociológica", editado pela Cia. Ed. Nacional em 1959. A Editora Ática republicou o artigo completo no livro "Florestan Fernandes – Coleção Grandes Cientistas Sociais", organizado por Octavio Ianni em 1986. A Revista Mediações, mediante autorização, publica a primeira parte do artigo apresentado no número 82 da Revista Anhembi. As notas aparecem numeradas no texto entre parênteses.

  1. The role of the CI expansion length in time-dependent studies

    Science.gov (United States)

    Ulusoy, Inga S.; Stewart, Zachary; Wilson, Angela K.

    2018-01-01

    With the recent advances in experimental attosecond science, theoretical predictions of electron dynamics can now be validated against experiment. Time-dependent studies of the electron motion in molecules can be used to obtain information about electronic transitions and the interaction of the electrons with electromagnetic fields. Often, these approaches rely on single-excited wave functions. Presented here is a first attempt to evaluate the accuracy of the time-dependent configuration interaction method so that the optimal representation of the electronic wave function for time-dependent studies can be assessed. A quantifier is determined that can aid in finding this optimal representation. The approach is demonstrated on a variety of molecules that include both localized and intramolecular charge transfer electron excitations. Observables including excitation energies, dipole moments, strengths, and static polarizabilities are obtained from time-independent and time-dependent calculations and are compared to experimental data. In this way, a rigorous routine is developed by which the reliability and accuracy of the CI wave function can be assessed and which represents a first step to a more quantitative description of electron dynamics in molecules.

  2. Influence of operating parameters on electrocoagulation of C.I. disperse yellow 3

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    Djamel Ghernaout

    2014-12-01

    Full Text Available This work deals with the electrocoagulation (EC process for an organic dye removal. The chosen organic dye is C.I. disperse yellow 3 (DY which is used in textile industry. Experiments were performed in batch mode using Al electrodes and for comparison purposes Fe electrodes. The experimental set-up was composed of 1 L beaker, two identical electrodes which are separated 2 cm from each other. The main operating parameters influencing EC process were examined such as pH, supporting electrolyte concentration CNaCl, current density i, and DY concentration. High performance EC process was shown during 45 min for 200 mg/L dye concentration at i = 350 A m-2 (applied voltage 12 V and CNaCl = 1 g L-1 reaching 98 % for pHs 3 and 10 and 99 % for pH 6. After 10 min, DY was also efficiently removed (86 % showing that EC process may be conveniently applied for textile industry wastewater treatment. EC using Fe electrodes exhibited slightly lower performance comparing EC using Al electrodes.

  3. O pensamento representacional e sua atualização nas ciências humanas

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    Eduardo Maurício Bomfim

    2012-04-01

    Full Text Available As ciências humanas ocupam um lugar particular na produção do conhecimento. Surgidas em decorrência de mudanças gerais na estrutura epistemológica e político-administrativa do século XIX, elas adquirem uma configuração específica que as localiza no cruzamento de vários outros saberes, como apontado pelo historiador Michel Foucault. Além disso, elas comportam outra peculiaridade, caracterizando-se em sua atividade por uma estreita relação com o que o filósofo Gilles Deleuze denomina de modelo da representação. A partir das análises de algumas obras destes dois pensadores, veremos como esses saberes operam uma atualização da representação por meio da normalização dos indivíduos.

  4. Sequence specificity of mutagenesis in the cI gene of bacteriophage lambda

    International Nuclear Information System (INIS)

    Skopek, T.R.; Wood, R.D.; Hutchinson, F.

    1985-01-01

    Studies of DNA base sequence alterations have shown that for every agent the mutagenic process is specific with respect to the types of base changes induced and the location of the changes in the DNA. Analysis of the types of mutations produced by mutagenic agents can provide insight into the mechanism of mutation and can suggest which DNA lesions may be involved in the actual mutagenic event. We have developed a system for the analysis of chemically induced base sequence alterations in the cI repressor gene of bacteriophage lambda using DNA sequencing techniques. To illustrate the utility of this type of analysis, we present the results obtained with ultraviolet light (UV). Irradiation of target DNA with UV alone, or UV followed by photoreactivating light (which removes dimers), produces mostly transitions at pyrimidine-pyrimidine sites. Conversely, irradiation with 313 nm light plus acetophenone (which produces only thymine dimers) produces mostly transversions at low efficiency. This and other evidence suggests that the actual premutagenic UV lesion in E. coli may not be pyrimidine-pyrimidine dimers, but rather pyr(6-4)pyo photoproducts

  5. PERFORMANCE AND EMISSION CHARACTERISTICS OF A CI ENGINE OPERATED ON VEGETABLE OILS AS ALTERNATIVE FUELS

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    K. Rajagopal

    2011-12-01

    Full Text Available An experimental analysis was done using a four-stroke, single cylinder, constant speed, water-cooled diesel engine, which was interfaced with Engine software. Performance and emission characteristics were evaluated for three non-edible vegetable oils, i.e. thumba, jojoba, neem oil, as well as jojoba methyl ester, to study the effect of injection pressure at 205, 220, 240 and 260 bar with a variation in injection timing at 23°bTDC and 28°bTDC. The performance of jojoba methyl ester improved with an increase in injection pressure. A maximum brake thermal efficiency of 29.72% was obtained with lower emissions compared to the other vegetable oils; this might be explained by low viscosity and better combustion. Further investigations were carried out with a new lubricant, SAE 5W-30, which improved the performance of the CI engine by 1.59%. All of the abovementioned investigations were fruitful and these results are expected to lead to substantial contributions in the development of a viable vegetable oil engine.

  6. Groth e Lampião: Jornalismo Laboratorial Impresso e a Ciência dos Jornais

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    Karina Gomes Barbosa

    2016-07-01

    Full Text Available Este artigo reflete sobre o lugar e o papel do jornalismo laboratorial impresso em um curso, ainda jovem, de Jornalismo do interior do país, a partir das Novas Diretrizes Curriculares Nacionais (DCNs e da importância do veículo no sistema de mídia da cidade onde o jornal-laboratório circula. Para efetuar tal reflexão, dialoga com conceitos fundamentais da chamada “ciência dos jornais” proposta por Otto Groth. Nesse sentido, tenta demonstrar as constantes articulações entre o pensamento teórico acerca do jornalismo e a práxis laboratorial efetivada na disciplina do curso. Partindo de tais premissas, traz relato de experiência da execução do jornal-laboratório Lampião, do curso de Jornalismo da Ufop, durante o segundo semestre de 2014, analisando-o sob cinco categorias, a saber: periodicidade, universalidade, atualidade e publicidade e experimentação. A partir dessa análise é possível perceber as maiores dificuldades e a falta de intimidade dos estudantes de Jornalismo com o produto jornal impresso, bem como as peculiaridades de um jornal protótipo, com periodicidade e atualidade bastante características.

  7. O ciúme enquanto sintoma do transtorno obsessivo-compulsivo

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    Torres Albina Rodrigues

    1999-01-01

    Full Text Available O ciúme patológico (CP é um problema importante para a psiquiatria, que envolve riscos e muito sofrimento, podendo ocorrer em diversos transtornos mentais. Psicopatologicamente pode se apresentar de formas distintas, tais como idéias obsessivas, prevalentes ou delirantes sobre infidelidade. Entretanto, sua apresentação no transtorno obsessivo-compulsivo (TOC, como uma obsessão em geral associada a rituais de verificação, é relativamente pouco documentada. Para discutir esse aspecto específico do CP, este trabalho é ilustrado com quatro casos clínicos selecionados, em que o CP tem tais características, abordando aspectos de diagnóstico e tratamento. A compreensão de alguns casos de CP como uma manifestação do TOC, mesmo quando não claramente egodistônica, amplia as possibilidades terapêuticas e pode melhorar o prognóstico.

  8. Da metamatemática para a ciência cognitiva From metamathematics to Cognitive Science

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    Henrique de Morais Ribeiro

    1999-01-01

    Full Text Available Neste artigo, propõe-se uma configuração possível para a transição histórico-filosófica de temas investigados no domínio da metamatemática para o domínio da Ciência Cognitiva funcionalista neurocomputacional. A descrição de tal transição é feita por meio de uma breve análise das idéias de Post, Church, Gödel e Turing sobre a possibilidade de formalização do pensamento criador na matemática, enfatizando as contribuições deste último.In this article, it is suggested a possible profile for the historical and philosophical migration of several issues from the metamathematical domain to the domain of functionalist neuro-computational Cognitive Science. The description of such a transition is accomplished by an analysis of the ideas of Post, Church, Gödel, and, in particular, Turing on the possibility of formalization of creative thinking in Mathematics.

  9. Biological, serological and molecular techniques to xanthomonas axonopodis pv. Ci tri Asymptomatic detection

    International Nuclear Information System (INIS)

    Peyrou, M.; Del Campo, R.; Russi, P.; Mara, H.; Rigamonti, N.; Larrechart, L.; Perez, E.

    2012-01-01

    Xanthomonas axonopodis pv. ci tri (X ac) produces citrus canker disease in all citrus commercial species. The bacteria can be disseminated through vegetative propagation material in asymptomatic form. To optimize bacteria detection techniques applicable to asymptomatic citrus plant tissue routine analysis, ELISA, Immunofluorescence, Pcr, qRT P CR and host plant inoculation (bioassay) diagnostic techniques were compared. Tests were made from decimal dilutions between 108 uf6.ml-1 and 102 ufc.mL-1 using a pure culture of 49b strain.The detection level obtained was 1.8 x 102 ufc.mL-1 using Inmunofluorescence; 1.8x104 ufc.mL-1 with indirect ELISA, 1.8 x 103 ufc.mL-1 by means of PCR; 10 ufc.mL-1 through of qRT P CR and 230 ufc.mL-1 in sour orange inoculated plants. The experiment was repeated at least three times for each technique. Considering this result, and taking into account that sensitivity, practicity and cost, are important when a great number of plants need to be tested, the PCR and inoculation in host plants were those that met the best characteristics to be evaluated in asymptomatic plant material

  10. Ciência & Saúde Coletiva: scientific production analysis and collaborative research networks.

    Science.gov (United States)

    Conner, Norma; Provedel, Attilio; Maciel, Ethel Leonor Noia

    2017-03-01

    The purpose of this metric and descriptive study was to identify the most productive authors and their collaborative research networks from articles published in Ciência & Saúde Coletiva between, 2005, and 2014. Authors meeting the cutoff criteria of at least 10 articles were considered the most productive authors. VOSviewer and Network Workbench technologies were applied for visual representations of collaborative research networks involving the most productive authors in the period. Initial analysis recovered 2511 distinct articles, with 8920 total authors with an average of 3.55 authors per article. Author analysis revealed 6288 distinct authors, 24 of these authors were identified as the most productive. These 24 authors generated 287 articles with an average of 4.31 authors per article, and represented 8 separate collaborative partnerships, the largest of which had 14 authors, indicating a significant degree of collaboration among these authors. This analysis provides a visual representation of networks of knowledge development in public health and demonstrates the usefulness of VOSviewer and Network Workbench technologies in future research.

  11. Do fabryki! Lenin Negriego i cięcie podmiotowe (1968-1973

    Directory of Open Access Journals (Sweden)

    Michael Hardt

    2016-06-01

    Full Text Available Tekst stanowi fragment doktoratu Michaela Hardta Sztuka organizacji: źródła ontologii politycznej u Gilles'a Deleuze'a i Antonio Negriego. Autor analizuje w nim dialog, jaki Antonio Negri podejmuje z pismami Włodzimierza Lenina w okresie intensywnych walk społecznych i przekształceń składu klasowego we Włoszech w latach 1968-1973. Doszukując się w tym spotkaniu kluczowego zwrotu teoretycznego w myśli włoskiego marksisty, Hardt przekonuje, że to właśnie w tekstach rosyjskiego rewolucjonisty Negri odnalazł narzędzia pozwalające mu wyjść poza ograniczenia krytycznego marksizmu, uznającego klasę robotniczą przede wszystkim za obiekt wyzysku, przez uczynienie kwestii jej podmiotowości centralnym zagadnieniem i punktem wyjścia teorii.

  12. Synthesis of Petroleum-Based Fuel from Waste Plastics and Performance Analysis in a CI Engine

    Directory of Open Access Journals (Sweden)

    Christine Cleetus

    2013-01-01

    Full Text Available The present work involves the synthesis of a petroleum-based fuel by the catalytic pyrolysis of waste plastics. Catalytic pyrolysis involves the degradation of the polymeric materials by heating them in the absence of oxygen and in the presence of a catalyst. In the present study different oil samples are produced using different catalysts under different reaction conditions from waste plastics. The synthesized oil samples are subjected to a parametric study based on the oil yield, selectivity of the oil, fuel properties, and reaction temperature. Depending on the results from the above study, an optimization of the catalyst and reaction conditions was done. Gas chromatography-mass spectrometry of the selected optimized sample was done to find out its chemical composition. Finally, performance analysis of the selected oil sample was carried out on a compression ignition (CI engine. Polythene bags are selected as the source of waste plastics. The catalysts used for the study include silica, alumina, Y zeolite, barium carbonate, zeolite, and their combinations. The pyrolysis reaction was carried at polymer to catalyst ratio of 10 : 1. The reaction temperature ranges between 400°C and 550°C. The inert atmosphere for the pyrolysis was provided by using nitrogen as a carrier gas.

  13. Touraine e Bourdieu nas ciências sociais brasileiras: duas recepções diferenciadas

    Directory of Open Access Journals (Sweden)

    José Sergio Leite Lopes

    2013-06-01

    Full Text Available Ao retomar o tema da recepção da obra de Pierre Bourdieu no Brasil, o presente artigo o faz a partir da comparação com a recepção de outro sociólogo francês, Alain Touraine, anteriormente implantado na circulação de ideias e redes de pesquisadores entre os dois países. A trajetória dos dois no que diz respeito a sua relação com o campo das ciências sociais brasileiras pode ser uma pista interessante para o conhecimento de aspectos deste mesmo campo no que se refere a sua inserção na circulação internacional de ideias e de pesquisadores. A bagagem acumulada de sociologia industrial de Touraine fez com que fosse procurado pela sociologia uspiana no momento em que as pesquisas sobre o fenômeno industrial de São Paulo eclodiam. Já a apropriação de Bourdieu incide sobre gerações subsequentes, e, ao ter adquirido renome nos anos 1990 nos países anglo-saxônicos, já era bem conhecido nos círculos especializados brasileiros.

  14. The Careful Puppet Master: Reducing risk and fortifying acceptance testing with Jenkins CI

    Science.gov (United States)

    Smith, Jason A.; Richman, Gabriel; DeStefano, John; Pryor, James; Rao, Tejas; Strecker-Kellogg, William; Wong, Tony

    2015-12-01

    Centralized configuration management, including the use of automation tools such as Puppet, can greatly increase provisioning speed and efficiency when configuring new systems or making changes to existing systems, reduce duplication of work, and improve automated processes. However, centralized management also brings with it a level of inherent risk: a single change in just one file can quickly be pushed out to thousands of computers and, if that change is not properly and thoroughly tested and contains an error, could result in catastrophic damage to many services, potentially bringing an entire computer facility offline. Change management procedures can—and should—be formalized in order to prevent such accidents. However, like the configuration management process itself, if such procedures are not automated, they can be difficult to enforce strictly. Therefore, to reduce the risk of merging potentially harmful changes into our production Puppet environment, we have created an automated testing system, which includes the Jenkins CI tool, to manage our Puppet testing process. This system includes the proposed changes and runs Puppet on a pool of dozens of RedHat Enterprise Virtualization (RHEV) virtual machines (VMs) that replicate most of our important production services for the purpose of testing. This paper describes our automated test system and how it hooks into our production approval process for automatic acceptance testing. All pending changes that have been pushed to production must pass this validation process before they can be approved and merged into production.

  15. A ciência do desenvolvimento humano: ajustando o foco de análise

    Directory of Open Access Journals (Sweden)

    Maria Auxiliadora Dessen

    2005-04-01

    Full Text Available Os avanços ocorridos nas últimas décadas, presentes nos domínios interdisciplinares da ciência do desenvolvimento, propõem uma mudança na forma de pensar o estudo do desenvolvimento humano, tendo um forte impacto na pesquisa. Neste artigo, são discutidos princípios e conceitos básicos que têm, recentemente, norteado a definição do próprio conceito de desenvolvimento humano, dentre eles, estrutura, temporalidade, mudanças e continuidades. Destaca-se, também, a necessidade de adotar, na prática da pesquisa, uma visão sistêmica do processo de desenvolvimento, implicando em análises de sistemas complexos e integrados em todos os seus níveis: genético, neural, comportamental e ambiental (físico, social e cultural, interagindo ao longo do tempo e traçando trajetórias de caráter probabilístico.

  16. O uso dualista do conhecimento das Ciências Sociais no Trabalho Social em Portugal

    Directory of Open Access Journals (Sweden)

    Telmo H Caria

    2012-01-01

    Full Text Available Pretendemos identificar as ideias/representações sociais que nos campos das Ciências tendem a transformar as diferenças de percursos e formas de institucionalização da Sociologia e do Serviço Social em impedimentos para a aproximação entre estas duas áreas de conhecimento (noção de dualismo. Estes impedimentos merecem uma reflexão sobre as significações e as concepções que existem em Portugal no âmbito da Sociologia que legitimam este dualismo, ou que nos dão pistas para o superar, sendo certo que no plano institucional sempre existirá competição e lutas de poder simbólico que forçarão a existência de dualidades entre ambas. Para melhor perceber as vantagens mútuas de ambas as disciplinas, pretendem-se apresentar exemplos já realizados em Portugal no grupo de investigação ASPTI (análise social do saber profissional em trabalho técnico-intelectual sobre o modo como temos lidado com as diferenças entre aquelas duas áreas de conhecimento para fomentar o diálogo interdisciplinar.

  17. Structure and Bonding of Carbon in Clays from CI Carbonaceous Chondrites

    Science.gov (United States)

    Garview, Laurence a. J.; Buseck, Peter R.

    2005-01-01

    Carbonaceous chondrites (CC) contain a diverse suite of C-rich materials. Acid dissolution of these meteorites leaves a C-rich residue with chemical and structural affinities to kerogen. This material has primarily been analyzed in bulk, and much information has been provided regarding functional groups and elemental and isotopic compositions. However, comparatively little work has been done on C in unprocessed meteorites. Studies of CCs suggest a spatial relationship of some C-rich materials with products of aqueous alteration. Recent studies revealed discrete submicronsized, C-rich particles in Tagish Lake and a range of CM2 meteorites. A challenge is to correlate the findings from the bulk acid-residue studies with those of high-spatial resolution-mineralogical and spectroscopic observations of unprocessed meteorites. Hence, the relationship between the C-rich materials in the acid residues and its form and locations in the unprocessed meteorite remains unclear. Here we provide information on the structure and bonding of C associated with clays in CI carbonaceous chondrites. Additional information is included in the original extended abstract.

  18. Geneza reumatoidalnego zapalenia stawów a możliwości terapii

    Directory of Open Access Journals (Sweden)

    Stefan H. Mackiewicz

    2010-02-01

    Full Text Available Reumatoidalne zapalenie stawów należy do najbardziejzłożonych pod względem patogenetycznym chorób autoimmunologicznych.Czynniki (czynnik DR-β1 genetyczne i środowiskowestanowią o wrażliwości na chorobę. Nieznany mechanizm indukującypowoduje aktywację układu immunologicznego. Zakreszmian w różnych populacjach komórek i produkcja prozapalnychmediatorów chemicznych stwarza stan pewnego ,,chaosu biologicznego”.Kluczowe znaczenie ma derepresja genów w komórkachi przepływ sygnałów wewnątrz- i międzykomórkowych.Chorobę charakteryzuje bardzo indywidualny przebieg i nieprzewidywalnaodpowiedź na różne metody leczenia. Stosowane lekidziałają plejotropowo (metrotreksat – hamując proliferację aktywowanychkomórek bądź selektywnie na poszczególne elementyłańcucha patogenetycznego (antycytokiny.

  19. O Princípio da Euritmia nas Ciências Sociais e Humanas

    Directory of Open Access Journals (Sweden)

    Paulo Castro

    2017-02-01

    Full Text Available O Princípio da Euritmia é a afirmação de que os entes na natureza adoptam preferencialmente os comportamentos que preservam a sua integridade estrutural, estendendo a sua existência. Formulado no contexto de uma física não linear como alternativa ao paradigma de Niels Bohr, o Princípio surge como um dos desenvolvimentos fundamentais a partir das ideias de Louis de Broglie,  no âmbito da chamada  Escola de Lisboa. Reflecte-se sobre os conceitos de «Princípio», «Lei da Natureza» e «Emergência», tendo como objectivo estender o paradigma Eurítmico às Ciências Sociais e Humanas.  Propõe-se um processo dinâmico descrevendo as escolhas de um agente social de acordo com uma instanciação possível do Princípio. Usando uma simulação computacional desse processo, estudam-se os comportamentos  de  dois agentes sociais em interacção com o meio, entre si e com a totalidade do sistema que compõem. Define-se autómato não linear como conceito operativo fundamental no entendimento dos fenómenos de Emergência.

  20. Critical effect of hydrogen peroxide concentration in photochemical oxidative degradation of C.I. Acid Red 27 (AR27).

    Science.gov (United States)

    Daneshvar, N; Rabbani, M; Modirshahla, N; Behnajady, M A

    2004-09-01

    The photochemical decolorization of C.I. Acid Red 27 (AR27), an anionic monoazo dye, was studied in the UV/H2O2 process by using a batch reactor with a UV-C lamp emitting at 254 nm (30 W). The decolorization rate follows pseudo-first order kinetic with respect to the AR27 concentration. The results indicate that the apparent reaction rate constant in the UV/H2O2 process is a function of H2O2 concentration. In this work, a mathematical relation between the apparent reaction rate constant of the AR27 removal and used H2O2 was established. The applied amount of H2O2 was performed in two forms: (i) the light fraction absorbed by H2O2 in 254 nm, (ii) the initial concentration ratio of H2O2 to AR27. The results obtained from this mathematical model are in good agreement with experimental results.

  1. IMC based Smith predictor design with PI+CI structure : Control of delayed MIMO systems

    NARCIS (Netherlands)

    Shakibjoo, A.D.; Vasegh, N.; Hossein Nia Kani, S.H.

    2016-01-01

    In this study a novel structure for time-delay MIMO systems controller design is introduced. In this method decoupled Smith predictor (SP) controller is designed using Internal Model Control structure (IMC). In order to approximate decoupled system, step response model approximation is employed and

  2. FUNKCJA SUM HARMONICZNYCH W SKRÓCONEJ PROCEDURZE OZNACZANIA ZESPOLONEGO MODUŁU SZTYWNOŚCI MMA

    Directory of Open Access Journals (Sweden)

    Andrzej POŻARYCKI

    2016-07-01

    Full Text Available W standardowej procedurze oznaczania sztywności mieszanek mineralno-asfalto-wych w funkcji częstotliwości obciążenia, powszechnie stosuje się metodę badań próbek obciążonych serią funkcji sinusoidalnych. W zależności od przyjętego wachlarza deklarowanych przez laboranta częstotliwości, procedura z serią badań stanowi procedurę inwazyjną, zwiększając jednocześnie prawdopodobieństwo wystąpienia zjawisk zmęczeniowych w badanych próbkach podczas realizowania testu. W pracy, w miejsce powszechnie stosowanej procedury zaproponowano obciążenie w formie funkcji utworzonej jako sumy funkcji harmonicznych. Na podstawie analizy wyników badań sztywności próbki belkowej wykazano, że proponowane podejście wyraźnie skraca czas procedury oznaczania zespolonego modułu sztywności, a różnice między standardowym ujęciem a tym proponowanym w pracy są w przeważającej większości mniejsze niż 2 %.

  3. Transakcyjny model dzieła muzycznego w późnej twórczości Mortona Feldmana

    Directory of Open Access Journals (Sweden)

    Damian Binkowski

    2016-10-01

    Full Text Available The aim of the article is to show the open nature of Morton Feldman’s late works despite the traditional form in which they were written. The analysis has been set in a wide context, including music, art and literature as well as philosophy and science.

  4. Prediction Models for Density and Viscosity of Biodiesel and their Effects on Fuel Supply System in CI Engines

    OpenAIRE

    Tesfa, Belachew; Mishra, Rakesh; Gu, Fengshou; Powles, Nicholas

    2010-01-01

    Biodiesel is a promising non-toxic and biodegradable alternative fuel used in the transport sector. Nevertheless, the higher viscosity and density of biodiesel poses some acute problems when it is used it in unmodified engine. Taking this into consideration, this study has been focused towards two objectives. The first objective is to identify the effect of temperature on density and viscosity for a variety of biodiesels and also to develop a correlation between density and viscosity for thes...

  5. Model typu “czarna skrzynka“ s charakterystyka kwadraowa v analizie wlašciwošci pomp i dmuchaw

    Czech Academy of Sciences Publication Activity Database

    Tesař, Václav; Peszyński, K.

    2007-01-01

    Roč. 4, č. 65 (2007), s. 27-32 ISSN 1426-6644 R&D Projects: GA AV ČR IAA200760705 Institutional research plan: CEZ:AV0Z20760514 Keywords : pump * ventilator * characteristic Subject RIV: BK - Fluid Dynamics

  6. Análise e crítica do conceito de ciência normal de Thomas Kuhn e sua filosofia da ciência de viés histórico

    OpenAIRE

    Alves, Daniel Caon

    2012-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Filosofia A obra Estrutura das Revoluções Científicas (1962), de Thomas S. Kuhn, foi responsável por promover diversos conceitos na área da Filosofia da Ciência relacionados a uma abordagem sócio-histórica da noção de ciência. Inspirado em filósofos e historiadores da ciência da primeira metade do século XX, Thomas Kuhn reuniu uma série de formulações e refl...

  7. Museus e centros de ciência virtuais : perspectivas e explorações de alunos e professores

    OpenAIRE

    Botelho, Agostinho de Jesus, 1967-

    2010-01-01

    Tese de doutoramento, Educação (Didáctica das Ciências), Universidade de Lisboa, Instituto de Educação, 2010 actual proliferação de museus e centros de ciência virtuais (MCCV), o seu uso pela Escola e o interesse que parecem despertar em alunos e professores, constituíram ponto de partida para a definição do seguinte problema de investigação: Como potenciar o ensino e a aprendizagem em ciência com o recurso aos MCCV? Este problema foi operacionalizado através dos seguintes objectivos: anal...

  8. Estudos cognitivos em ciência da informaçãoCognitive studies in information science

    Directory of Open Access Journals (Sweden)

    Gercina Ângela Borem de Oliveira Lima

    2003-05-01

    Full Text Available The study of the influences from Cognitive Sciences in the information Science. The Information Science has as objects of study the very basic concepts of information and knowledge. Since such concepts have an inherently trans-disciplinary character, the Information Science has been largely influenced by many disciplines, particularly the Cognitive Science. Regardless of this, it is observed that such concepts have not been properly discussed within the Information Science. To deal with this concern, it has been structured in the Escola de Ciência da Informação (ECI of the Universidade Federal de Minas Gerais (UFMG, a research group denoted “Cognitive Studies in Information Science”. This work aims to discuss the relationships between the Information Science and the Cognitive Science. In order to achieve this purpose, one formerly presents the major approaches within the Cognitive Science, contextualizing their aspects that mostly influence the Information Science, and then one discuss some perspectives for the future relationship of these two disciplines.O estudo da influência das Ciências Cognitivas na Ciência da Informação. A Ciência da Informação, que tem como objetos de estudo a informação e o conhecimento, discute-os sob vários pontos de vista, sendo um deles, o cognitivo. Observa-se que os conceitos não têm sido adequadamente discutidos à luz das Ciências Cognitivas, apesar da Ciência da Informação sofrer muitas influências daquela disciplina. Em função dessas questões, estruturou-se, na Escola de Ciência da Informação–ECI da Universidade Federal de Minas Gerais-UFMG, o Grupo de Pesquisa “Estudos Cognitivos em Ciência da Informação” – GECCI. Neste trabalho, marco inicial das discussões do grupo, tem-se o objetivo de discutir as relações da Ciência da Informação com as Ciências Cognitivas. Para melhor compreensão desse relacionamento, serão apresentadas as principais vertentes das ci

  9. Análise do comportamento e sociedade: implicações para uma ciência dos valores

    OpenAIRE

    Bogo,Anne Carolynne; Laurenti,Carolina

    2012-01-01

    O behaviorismo radical tem sido alvo de muitas críticas, principalmente no que se refere às questões éticas. A despeito dessas críticas, Skinner considera a análise do comportamento uma ciência dos valores, discutindo a moralidade em termos de comportamento moral. Entretanto, a afirmação de que a análise do comportamento é uma ciência dos valores pode ter consequências sociais distintas a depender do modelo de ciência adotado como pressuposto. O debate científico contemporâneo trata da crise ...

  10. Religião e Ciência: sustentação e entraves acerca do debate

    Directory of Open Access Journals (Sweden)

    Andréia Christina Nascimento Dias

    2014-06-01

    Full Text Available DIAS, Andréia Christina do Nascimento. Religião e Ciência: sustentação e entraves acerca do debate. 2014. Dissertação (Mestrado, Programa de Pós-graduação em Ciências da Religião, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte.Palavras-Chave: Religião. Ciência. Razão. Psicologia. Moral. Educação.Keywords: Religion. Science. Reason. Psychology. Morals. Education.  

  11. Reconsiderando a etnografia da ciência e da tecnologia: tecnociência na prática

    OpenAIRE

    Monteiro,Marko Synésio Alves

    2012-01-01

    Este artigo analisa a metodologia etnográfica na pesquisa de temas ligados à ciência e à tecnologia como forma de discutir os desafios que esse campo apresenta hoje às ciências sociais. A abordagem etnográfica vem sendo cada vez mais utilizada para a análise das relações entre ciência, tecnologia e sociedade. Num movimento paralelo, tais temas têm interessado crescentemente a antropologia. Acreditamos que os estudos antropológicos nessa área oferecem uma perspectiva peculiar, incluindo a anál...

  12. Preferowanie podmiotów publicznych w niektórych rodzajach działalności gospodarczej

    OpenAIRE

    Sylwestrzak, Dorota

    2015-01-01

    Ustawodawca stwarza warunki zapewniające niedyskryminacyjne tratowanie podmiotów publicznych i prywatnych, ale zdarza się różnicowanie podmiotów, podyktowane zasadniczo przesłanką interesu publicznego i koniecznością ochrony wartości konstytucyjnych, Faworyzowanie podmiotów publicznych przejawia się głównie w zakresie stwarzania ułatwień w podejmowaniu działalności gospodarczej, w wyborze formy organizacyjno-prawnej, w której działalność gospodarcza może być prowadzona,...

  13. El Fons Millàs de la secció d'Història de la Ciència de la Biblioteca de Ciències i d'Enginyeries

    OpenAIRE

    Roqué, Xavier

    2000-01-01

    El fons Millàs inclou unes 1300 monografies sobre ciència àrab, instruments científics, poesia hebrea medieval, història de l'astronomia i de les matemàtiques, i historiografia de la ciència; diverses sèries de publicacions periòdiques; i la col·lecció gairebé completa de les obres de Josep Maria Millàs

  14. Study for optimization of a 60 Co industrial irradiator of 250 k Ci

    International Nuclear Information System (INIS)

    Pina V, G.

    1995-01-01

    This work presents results of a benchmark between calculated and experimental absorbed dose values for a typical product, in a 60 Co industrial irradiator, located at ININ, Mexico. The goal of this work is to reach a ± 10 % approximation between both values. ININ 60 Co industrial irradiator is a two level, two layer system with overlapping product configuration, 56 irradiation positions with an activity of around 250 k Ci. Calculated values were obtained by QAD-CGGP code. This code uses a point kernel technique, build-up factors fitting was done by geometrical progression and combinatorial geometry was used for 3 D system description. Main code modifications were related with source simulation by punctual sources and energy spectrum (16 energy groups) and anisotropic emission were also considered. Experimental data were obtained from routine dosimetry which was done with red acrylic pellets; they were irradiated together the product in predetermined positions, for 36 maximum and minimum absorbed dose values. Typical product was polypropylene Petri dish packages, apparent density 0.13 g/cm 3 . It was chosen because regular geometry (2 packages per full irradiator container) and enough amount for considering homogeneous loading inside irradiation chamber. Required minimum dose was 15 kGy. Results showed a 8% variation between calculated and experimental values for maximum absorbed dose (18.2 kGy vs 16.8 kGy) and 3 % variation for minimum absorbed dose (13.8 kGy vs 14.3 kGy); these results fixed with the original proposal. (Author)

  15. Saberes docente para o ensino de ciências e biologia

    Directory of Open Access Journals (Sweden)

    Cibele Bender Raio

    2017-09-01

    Full Text Available Este trabalho apresenta os saberes que configuram um bom professor. Estes saberes, caracterizados pela mudança nos padrões de participação do professor na prática pedagógica, os quais não são construídos apenas durante o curso de formação inicial, mas sim ao longo da história de vida do educador. A partir dos conhecimentos de Paulo Freire e de Edgar Morin são sugeridos temas para possíveis práticas no ensino de ciências e de biologia. Dessa forma, uma educação em que o professor só deposita o conteúdo no aluno deve ser substituída por aquela que instiga a curiosidade, valoriza a opinião a sua opinião, considera seus sentimentos e promove a sua autonomia, ou seja, converte o educando em um agente transformador da sua própria realidade. Para isso, o professor precisa atuar com sentimentalidade, criticidade e autoridade, sem autoritarismo. Além disso, é papel do educador mostrar que não há conhecimento ileso ao erro ou a ilusão. Ele, também, precisa trabalhar o contexto local em relação a um conteúdo global. É um saber ensinar a condição do humano como unidade do universo e educar sobre a identidade terrena. Considerando, além disso, as incertezas dos acontecimentos e a ética humana. As discussões aqui apresentadas são sugestões para o desenvolvimento de práticas de ensino. No entanto, o professor deve elaborá-las de acordo com o seu ambiente de trabalho e seu público.

  16. Diversity and Resource Use Patterns of Anthophile Insects in Cuatro Ciénegas, Coahuila, Mexico.

    Science.gov (United States)

    Ávalos-Hernández, Omar; Cano-Santana, Zenón; Trujano-Ortega, Marysol; García-Vázquez, Uri Omar

    2016-12-01

    Bees and flies are the main pollinators responsible for the maintenance of plant diversity and crop production. Studies of pollinator communities have focused on bees; however, community structures may vary among groups of pollinators. We describe and compare the diversity and resource use patterns of six Apoidea and two Diptera anthophile families in Cuatro Ciénegas in the northeast of Mexico. We sampled insects in two distinct geographic units (valley and mountains) and two seasons (rainy and dry). Spatial and temporal patterns in species composition and abundance of these families were identified and the diversity in each family compared. The spatial and temporal patterns in species composition, diversity, and resource use were different for each family. Overall, diversity was higher during the rainy season. Only fly families and the Andrenidae presented season-specific differences in species composition, in contrast with the other Apoidea. Two bee families visited more plant species per insect species during the rainy season, whereas flies visited the same number of plant species in both seasons. Apidae, Megachilidae, and Bombyliidae visited more plant species in the mountains, while the other families exhibited no differences between the mountains and the valley. The variation in the community structures of each group may reflect distinct life histories, resources needs during larval stages, and foraging behaviors. These differences are relevant in management and conservation programs that could benefit one group of pollinators while harming others with different characteristics. The traits of some families indicate their potential value as pollinators. © The Authors 2016. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  17. The effects of using biodiesel on CI (compression ignition) engine and optimization of its production by using response surface methodology

    International Nuclear Information System (INIS)

    Abuhabaya, Abdullah; Fieldhouse, John; Brown, David

    2013-01-01

    Bio-fuel production provides an alternative non-fossil fuel without the need to redesign current engine technology. This study presents an experimental investigation into the effects of using biodiesel blends on diesel engine performance and its emissions. The biodiesel fuels were produced from Sunflower oil using the transesterification process with low molecular weight alcohols and sodium hydroxide then tested on a steady state engine test rig using a Euro 4 four cylinder CI (compression ignition) engine. This study also shows how by blending biodiesel with diesel fuel at intervals of B5, B10, B15, and B20 can decrease harmful gas emissions significantly while maintaining similar performance output and efficiency. Production optimization was achieved by changing the variables which included methanol/oil molar ratio, NaOH catalyst concentration, reaction time, reaction temperature, and rate of mixing to maximize biodiesel yield. The technique used was the RSM (response surface methodology). In addition, a second-order model was developed to predict the biodiesel yield if the production criteria is known. The model was validated using additional experimental testing. It was determined that the catalyst concentration and molar ratio of methanol to sunflower oil were the most influential variables affecting percentage conversion to fuel and percentage initial absorbance. - Highlights: • The optimal conditions for the maximum methyl ester yield were found to be at methanol/oil molar ratio of 6.8:1. • NaOH catalyst concentration of 1.1%, reaction temperature 35 °C. • Rate of mixing 200 rpm and a minimum reaction time of 66 min. • The fuel properties were measured. • The combustion analysis, it was found the performance of the B20 was as good as that of standard diesel

  18. Naród kontra lewactwo. Polityczne kategoryzacje rzeczywistości w folklorze internetowym

    Directory of Open Access Journals (Sweden)

    Michał Rauszer

    2016-01-01

    all features which exclude you from the community and your positive “national identity.”   Naród kontra lewactwo. Polityczne kategoryzacje rzeczywistości w folklorze internetowym W znanym eseju Dziecięca choroba lewicowości w komunizmie Lenin, na określenie naiwnej jego zdaniem polityki zachodnich partii komunistycznych, używa pojęcia „lievizna”. Zwykle tłumaczy się je jako „lewicowość”, termin ten jednak nie oddaje pogardy dla zachodnich partii komunistycznych, z jaką Lenin się o nich wypowiadał. W języku polskim wyraz ten był także niekiedy przekładany jako „lewactwo”, po to by służył ośmieszaniu działań niezgodnych z nomenklaturą Polskiej Zjednoczonej Partii Robotniczej (przykładem może być ruch ‘68 na Zachodzie. Współcześnie określenie „lewactwo” najczęściej jest używane w dyskursie ruchów prawicowych, aby pokazać każdy niezgodny z nimi projekt jako „dziecinny”. Wyrazem tym określa się nie tylko ruchy lewicowe, ale także wszystkie inne, które nie wpisują się w dyskurs prawicy narodowej. W swoim artykule staram się pokazać, w jaki sposób wyraz ten służy jako fantazmatyczna bariera, granica definiująca tożsamość narodową. Za materiał badawczy posłużył mi folklor internetowy taki, jak: memy, komentarze pod artykułami i zdjęciami, krótkie filmiki na portalu YouTube, a także oferta internetowych sklepów z odzieżą i gadżetami patriotycznymi (oferta tych sklepów jest ściśle oparta na takiej folklorystycznej interpretacji wydarzeń ujmowanych jako ważne. Pojęcie „lewactwa” funkcjonuje jako bariera wyznaczająca tożsamość narodową oraz jako przestrzeń fantazji. Ideologiczna praca tego pojęcia pokazuje, w jaki sposób w opozycji do tej bariery definiuje się i wyznacza pozytywny zbiór tego, co jest postrzegane jako „narodowe”, oraz tego, co „narodem” nie jest. Ponadto „lewactwo” jest także używane jako ekran fantazji, na której projektuje się cechy

  19. A comparison of the super-CI and the Newton-Raphson scheme in the complete active space SCF method

    International Nuclear Information System (INIS)

    Siegbahn, P.; Heiberg, A.; Roos, B.; Levy, B.

    1980-01-01

    A density matrix formulation is presented of the super-CI and Newton-Raphson methods in complete active space SCF (CASSCF) calculations. The CASSCF method is a special form of the MC-SCF method, where the CI wave function is assumed to be complete in a subset of the orbital space (the active space), leaving the remaining orbitals doubly occupied in all configurations. Explicit formulas are given for all matrix elements in the super-CI method and the first and second derivatives in the Newton-Raphson formulation. The similarities between the two methods are pointed out and the differences in the detailed formulations are discussed. Especially interesting is the fact, that while the second derivatives can be expressed in terms of first and second order density matrices, the matrix elements between the super-CI states involve also the third order density matrix in some cases. (Auth.)

  20. Política, cidadania e comunicação “crítica” da ciência

    OpenAIRE

    Carvalho, Anabela

    2004-01-01

    Este artigo procura identificar e reflectir sobre mudanças que estarão a ter lugar a três níveis: nas estratégias e estilos de comunicação pública dos cientistas; na relação entre cidadãos, ciência e processos de decisão política; e na actuação dos jornalistas de ciência. O denominador comum a estas tendências parece ser o reforço (ou, pelo menos, a promoção) de uma atitude crítica relativamente à ciência. As implicações de uma comunicação ‘crítica’ da ciência para o exercício da cidadania e ...

  1. Os PCNs e as inovações nos livros didáticos de ciências

    OpenAIRE

    Canhete, Marcus Vinicius Urbinatti, 1982-

    2012-01-01

    Resumo: Este trabalho busca entender como as Inovações no ensino (mudança deliberada e conscientemente assumida visando uma melhoria de uma ação educativa), presentes nos Parâmetros Curriculares Nacionais de Ciências (PCN), estão sendo disseminadas. A análise abordou aspectos do enfoque Ciência, Tecnologia e Sociedade (CTS) e da História e Filosofia da Ciência (HFC). A partir de um estudo exploratório escolheu-se o livro didático de Ciências como o objeto de investigação, pela importância que...

  2. OCENA ROZWIĄZAŃ PLANISTYCZNYCH Z WYKORZYSTANIEM PRZESTRZENNYCH BAZ DANYCH W ASPEKCIE SKALOWALNOŚCI ROZWOJU ZABUDOWY

    Directory of Open Access Journals (Sweden)

    Tomasz SALATA

    Full Text Available Artykuł prezentuje możliwości zastosowania metod geomatycznych do oceny jakości sporządzonych rysunków miejscowych planów zagospodarowania przestrzennego w aspekcie możliwości ich kontrolowanego rozwoju. Skalowalność, badana w poniższym artykule jest miarą możliwego powielania rozwiązań planistycznych z zakresu komunikacji, optymalizacji wielkości działek budowlanych, rozwoju terenów podmiejskich i racjonalnego wykorzystywania możliwych terenów inwestycyjnych dla budownictwa mieszkaniowego. Analizę przestrzenną wykonano w oparciu o techniki GIS i funkcje zaimplementowane do obsługi przestrzennych baz danych. Skorzystano z wolnego oprogramowania: SQLite/Spatialite, SpatiaLite_GUI, QGIS.

  3. Ochrona prawa do prywatności a relacjonowanie przebiegu rozprawy głównej w polskim procesie karnym

    OpenAIRE

    Dobrzańska, Sara

    2016-01-01

    Przedmiotem artykułu jest problem ochrony prawa do prywatności w polskim procesie karnym w kontekście relacjonowania przebiegu rozprawy głównej przez media. Analizie zostały poddane zarówno warunki dopuszczalności relacjonowania rozprawy, przedmiot ingerencji, jak i podmioty, których prawo do prywatności może być naruszone w toku relacjonowania rozprawy głównej przez media. Prawo do prywatności jest współcześnie chronione nie tylko przez normy prawa cywilnego, ale również przez prawo konstytu...

  4. Oxidation of SO2 by stabilized Criegee intermediate (sCI radicals as a crucial source for atmospheric sulfuric acid concentrations

    Directory of Open Access Journals (Sweden)

    M. Boy

    2013-04-01

    Full Text Available The effect of increased reaction rates of stabilized Criegee intermediates (sCIs with SO2 to produce sulfuric acid is investigated using data from two different locations, SMEAR II, Hyytiälä, Finland, and Hohenpeissenberg, Germany. Results from MALTE, a zero-dimensional model, show that using previous values for the rate coefficients of sCI + SO2, the model underestimates gas phase H2SO4 by up to a factor of two when compared to measurements. Using the rate coefficients recently calculated by Mauldin et al. (2012 increases sulfuric acid by 30–40%. Increasing the rate coefficient for formaldehyde oxide (CH2OO with SO2 according to the values recommended by Welz et al. (2012 increases the H2SO4 yield by 3–6%. Taken together, these increases lead to the conclusion that, depending on their concentrations, the reaction of stabilized Criegee intermediates with SO2 could contribute as much as 33–46% to atmospheric sulfuric acid gas phase concentrations at ground level. Using the SMEAR II data, results from SOSA, a one-dimensional model, show that the contribution from sCI reactions to sulfuric acid production is most important in the canopy, where the concentrations of organic compounds are the highest, but can have significant effects on sulfuric acid concentrations up to 100 m. The recent findings that the reaction of sCI + SO2 is much faster than previously thought together with these results show that the inclusion of this new oxidation mechanism could be crucial in regional as well as global models.

  5. Oxygen, Magnesium, and Aluminum Isotopes in the Ivuna CAI: Re-Examining High-Temperature Fractionations in CI Chondrites

    Science.gov (United States)

    Frank, D. R.; Huss, G. R.; Nagashima, K.; Zolensky, M. E.; Le, L.

    2017-01-01

    CI chondrites are thought to approximate the bulk solar system composition since they closely match the composition of the solar photosphere. Thus, chemical differences between a planetary object and the CI composition are interpreted to result from fractionations of a CI starting composition. This interpretation is often made despite the secondary mineralogy of CI chondrites, which resulted from low-T aqueous alteration on the parent asteroid(s). Prevalent alteration and the relatively large uncertainties in the photospheric abundances (approx. +/-5-10%) permit chemical fractionation of CI chondrites from the bulk solar system, if primary chondrules and/or CAIs have been altered beyond recognition. Isolated olivine and pyroxene grains that range from approx. 5 microns to several hundred microns have been reported in CI chondrites, and acid residues of Orgueil were found to contain refractory oxides with oxygen isotopic compositions matching CAIs. However, the only CAI found to be unambiguously preserved in a CI chondrite was identified in Ivuna. The Ivuna CAI's primary mineralogy, small size (approx.170 microns), and fine-grained igneous texture classify it as a compact type A. Aqueous alteration infiltrated large portions of the CAI, but other regions remain pristine. The major primary phases are melilite (Ak 14-36 ), grossmanite (up to 20.8 wt.% TiO 2 ), and spinel. Both melilite and grossmanite have igneous textures and zoning patterns. An accretionary rim consists primarily of olivine (Fa 2-17 ) and low-Ca pyroxene (Fs 2-10 ), which could be either surviving CI2 material or a third lithology.

  6. Adsorption of C.I. Reactive Red 228 and Congo Red dye from aqueous solution by amino-functionalized Fe3O4 particles: kinetics, equilibrium, and thermodynamics.

    Science.gov (United States)

    Yan, Ting-guo; Wang, Li-Juan

    2014-01-01

    A magnetic adsorbent was synthesized by γ-aminopropyltriethoxysilane (APTES) modification of Fe(3)O(4) particles using a two-step process. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and vibration sample magnetometry were used to characterize the obtained magnetic adsorbent. EDS and XPS showed that APTES polymer was successfully introduced onto the as-prepared Fe(3)O(4)/APTES particle surfaces. The saturation magnetization of the magnetic adsorbent was around 65 emu g(-1), which indicated that the dye can be removed fast and efficiently from aqueous solution with an external magnetic field. The maximum adsorption capacities of Fe(3)O(4)/APTES for C.I. Reactive Red 228 (RR 228) and Congo Red (CR) were 51.4 and 118.8 mg g(-1), respectively. The adsorption of C.I. Reactive Red 228 (RR 228) and Congo Red (CR) on Fe(3)O(4)/APTES particles corresponded well to the Langmuir model and the Freundlich model, respectively. The adsorption processes for RR 228 and CR followed the pseudo-second-order model. The Boyd's film-diffusion model showed that film diffusion also played a major role in the studied adsorption processes for both dyes. Thermodynamic study indicated that both of the adsorption processes of the two dyes are spontaneous exothermic.

  7. Anti-microbial coating innovations to prevent infectious diseases (AMiCI): Cost action ca15114.

    Science.gov (United States)

    Dunne, Colum P; Keinänen-Toivola, Minna M; Kahru, Anne; Teunissen, Birgit; Olmez, Hulya; Gouveia, Isabel; Melo, Luis; Murzyn, Kazimierz; Modic, Martina; Ahonen, Merja; Askew, Pete; Papadopoulos, Theofilos; Adlhart, Christian; Crijns, Francy R L

    2017-11-02

    Worldwide, millions of patients are affected annually by healthcare-associated infection (HCAI), impacting up to 80,000 patients in European Hospitals on any given day. This represents not only public health risk, but also an economic burden. Complementing routine hand hygiene practices, cleaning and disinfection, antimicrobial coatings hold promise based, in essence, on the application of materials and chemicals with persistent bactericidal or -static properties onto surfaces or in textiles used in healthcare environments. The focus of considerable commercial investment and academic research energies, such antimicrobial coating-based approaches are widely believed to have potential in reduction of microbial numbers on surfaces in clinical settings. This belief exists despite definitive evidence as to their efficacy and is based somewhat on positive studies involving, for example, copper, silver or gold ions, titanium or organosilane, albeit under laboratory conditions. The literature describes successful delay and/or prevention of recontamination following conventional cleaning and disinfection by problematic microbes such as methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin resistant enterococci (VRE), among others. However, there is a scarcity of studies assessing antimicrobial surfaces other than copper in the clinical environment, and a complete lack of published data regarding the successful implementation of these materials on clinically significant outcomes (including HCAI). Through its Cooperation in Science and Technology program (COST), the European Commission has funded a 4-year initiative to establish a network of stakeholders involved in development, regulation and use of novel anti-microbial coatings for prevention of HCAI. The network (AMiCI) comprises participants of more than 60 universities, research institutes and companies across 29 European countries and, to-date, represents the most comprehensive consortium targeting use of

  8. Endo-referência de uma ciência formalizada da natureza

    Directory of Open Access Journals (Sweden)

    Michel Paty

    1992-04-01

    Full Text Available O trabalho desenvolve as implicações da idéia de que quando uma teoria atinge um estágio abstrato de formalização, como é o caso de teorias físicas, da mecânica quântica, o significado de seus conceitos e proposições, objetivos para representação e inteligibilidade do mundo físico (realidade física em qualquer de suas acepções é obtido a partir da própria teoria. Em síntese, "é a própria que dita o significado de suas proposições", segundo Einstein e Heisenberg. Em seguida apresenta uma análise do significado de 'teoria formalizada' para o caso das ciências de conteúdo empírico como a física, concluindo que a acepção adotada não pode ser reduzida a um 'formalismo interpretado' nos moldes aceitos pelos elementos do Círculo de Viena. Aspectos dinâmicos das teorias são também discutidos. Finalmente, a partir das considerações acima, é introduzido o conceito de 'endo-referência' e discutidas as suas conexões com o conceito kantiano de sintético a priori.The paper develops epistemological implications of the idea that, when a theory is in state of abstract formalization (as to-day physical theory, quantum physics for instance is, the meaning of its concepts and propositions, which are aiming at the representation and intelligibility of the external physical world is however to be taken from within the theory itself. " It is the theory itself which dictates the physical significance of its propositions" in the words of Heisenberg and Einstein. It contains also the analysis of what is meant by " formalized theory" for a science with empirical content as physics and concludes that it cannot be reduced to a mere "interpreta formalism" in the sense of logical impiricism. Finaly it works on the sense of endoreference connctions with a kantian concept of a priori synthetic.

  9. Jenkins-CI, an Open-Source Continuous Integration System, as a Scientific Data and Image-Processing Platform.

    Science.gov (United States)

    Moutsatsos, Ioannis K; Hossain, Imtiaz; Agarinis, Claudia; Harbinski, Fred; Abraham, Yann; Dobler, Luc; Zhang, Xian; Wilson, Christopher J; Jenkins, Jeremy L; Holway, Nicholas; Tallarico, John; Parker, Christian N

    2017-03-01

    High-throughput screening generates large volumes of heterogeneous data that require a diverse set of computational tools for management, processing, and analysis. Building integrated, scalable, and robust computational workflows for such applications is challenging but highly valuable. Scientific data integration and pipelining facilitate standardized data processing, collaboration, and reuse of best practices. We describe how Jenkins-CI, an "off-the-shelf," open-source, continuous integration system, is used to build pipelines for processing images and associated data from high-content screening (HCS). Jenkins-CI provides numerous plugins for standard compute tasks, and its design allows the quick integration of external scientific applications. Using Jenkins-CI, we integrated CellProfiler, an open-source image-processing platform, with various HCS utilities and a high-performance Linux cluster. The platform is web-accessible, facilitates access and sharing of high-performance compute resources, and automates previously cumbersome data and image-processing tasks. Imaging pipelines developed using the desktop CellProfiler client can be managed and shared through a centralized Jenkins-CI repository. Pipelines and managed data are annotated to facilitate collaboration and reuse. Limitations with Jenkins-CI (primarily around the user interface) were addressed through the selection of helper plugins from the Jenkins-CI community.

  10. Prognozowanie i ujmowanie przychodóww przedsiębiorstwie postawionymw stan upadłości likwidacyjnej

    Directory of Open Access Journals (Sweden)

    Janusz Czerny

    2010-03-01

    Full Text Available W upadłości likwidacyjnej przedsiębiorstw mamy do czynienia z dwoma stru-mieniami przychodów, a mianowicie z przychodami dotyczącymi zbycia przedsię-biorstwa lub jego składników majątku oraz z przychodami związanymi z ewentual-nym kontynuowaniem działalności: Przychody ze sprzedaży przedsiębiorstwa powinny być prognozowane głównie na podstawie informacji płynących z systemu rachunkowości, co stanowi tzw. sta-tyczny aspekt upadłości, natomiast jej aspekt dynamiczny jest związany z zakre-sem i czasem kontynuowanej działalności, o czym decyduje syndyk, mając na uwa-dze naczelny cel upadłości, jakim jest optymalne zaspokojenie roszczeń wierzycieli.

  11. Jenkins-CI, an Open-Source Continuous Integration System, as a Scientific Data and Image-Processing Platform

    Science.gov (United States)

    Moutsatsos, Ioannis K.; Hossain, Imtiaz; Agarinis, Claudia; Harbinski, Fred; Abraham, Yann; Dobler, Luc; Zhang, Xian; Wilson, Christopher J.; Jenkins, Jeremy L.; Holway, Nicholas; Tallarico, John; Parker, Christian N.

    2016-01-01

    High-throughput screening generates large volumes of heterogeneous data that require a diverse set of computational tools for management, processing, and analysis. Building integrated, scalable, and robust computational workflows for such applications is challenging but highly valuable. Scientific data integration and pipelining facilitate standardized data processing, collaboration, and reuse of best practices. We describe how Jenkins-CI, an “off-the-shelf,” open-source, continuous integration system, is used to build pipelines for processing images and associated data from high-content screening (HCS). Jenkins-CI provides numerous plugins for standard compute tasks, and its design allows the quick integration of external scientific applications. Using Jenkins-CI, we integrated CellProfiler, an open-source image-processing platform, with various HCS utilities and a high-performance Linux cluster. The platform is web-accessible, facilitates access and sharing of high-performance compute resources, and automates previously cumbersome data and image-processing tasks. Imaging pipelines developed using the desktop CellProfiler client can be managed and shared through a centralized Jenkins-CI repository. Pipelines and managed data are annotated to facilitate collaboration and reuse. Limitations with Jenkins-CI (primarily around the user interface) were addressed through the selection of helper plugins from the Jenkins-CI community. PMID:27899692

  12. Metody prognozowania upadłości wykorzystywane przez polskie przedsiębiorstwa – wyniki badań ankietowych

    Directory of Open Access Journals (Sweden)

    Paweł Kopczyński

    2016-09-01

    Full Text Available Każde przedsiębiorstwo prowadzące działalność w warunkach gospodarki rynkowej jest narażone na ryzyko upadłości, dlatego bardzo ważne jest jej prognozowanie. Opracowano wiele metod pozwalających menedżerom przewidywać bankructwo, ale niewiele z nich jest wykorzystywanych w praktyce życiagospodarczego. Celem niniejszego artykułu jest prezentacja wyników badania empirycznego dotyczące-go zidentyfikowania metod prognozowania upadłości wykorzystywanych w praktyce przez polskie przedsiębiorstwa oraz ustalenie częstotliwości dokonywania takiej oceny. Badanie przeprowadzono za pomocą kwestionariusza ankietowego wysłanego do 703 spółek notowanych na rynku regulowanym Giełdy Papierów Wartościowych w Warszawie (GPW oraz na rynku NewConnect. Ze względu na niewielką liczbę odebranych ankiet, przeprowadzono analogiczne badanie na innej grupie przedsię-biorstw. W artykule zaprezentowano i porównano ze sobą wyniki obu tych badań. Okazało się, że polskie firmy bardzo rzadko wykorzystują nowoczesne narzędzia prognozowania upadłości, takie jak modele jedno- i wielowymiarowe. Dlatego też należy przedsięwziąć działania mające na celu ich popularyzację oraz edukować menedżerów, jak je stosować.

  13. Programa de aprimoramento para profissionais da informação em ciências da saúdeImprovement program for health sciences information professionals

    Directory of Open Access Journals (Sweden)

    Cláudia Araujo Martins

    2008-08-01

    Full Text Available Em Ciência da Informação, áreas de atuação distintas exigem profissionais distintos. Se por um lado, a formação generalista do bibliotecário lhe garante um amplo mercado de trabalho, por outro, a falta de especialização pode ser um obstáculo para uma vaga de emprego. Áreas como as Ciências da Saúde exigem competências não desenvolvidas na graduação, com raras exceções. Com o intuito de qualificar, capacitar e suprir defasagens dos cursos de Biblioteconomia e Ciência da Informação foi criado o Programa de Aprimoramento em Documentação e Informação em Ciências da Saúde, um curso de pós-graduação lato sensu, que atualmente encontra-se em fase de implantação e avaliação. Abstract In Information Science different fields of work seeks for different professional backgrounds. If, on the one hand, the generalist background of the librarian assures him/her a broad labor market, on the other hand, the unskilled professionals may find difficulty to fill a vacant position. With a few exceptions, fields such as Health Sciences require a competence model not achieved in undergraduate courses. The Improvement Program in Documentation and Information on Health Sciences was implemented with the purpose to provide qualification and professional skills, and to fill the gap of academic courses in Library Science and Information Science. Currently, this program is in the process of being settled and evaluated.

  14. Ujawnianie informacji o wartości ekonomicznej operacyjnych aktywów trwałych w sprawozdawczości finansowej spółek publicznych

    Directory of Open Access Journals (Sweden)

    Marcin Michalak

    2016-07-01

    Full Text Available Celem artykułu jest analiza stosowanych w jednostkach sprawozdawczych zasad identyfikacji, pomiaru i ujmowania utraty wartości operacyjnych aktywów trwałych, w tym definiowania i pomiaru ich wartości ekonomicznej oraz jej determinant, a także jakości odnośnych informacji ujawnianych w sprawozdaniach finansowych spółek publicznych za rok 2014. Aby zrealizować ten cel, autorzy przeprowadzili analizę ujawnień dokonywanych w jednostkowych sprawozdaniach finansowych przez spółki publiczne notowa- ne na Giełdzie Papierów Wartościowych w Warszawie (GPW, wchodzące w skład indeksu WIG 20 i sWIG 80. Przedmiotem badania były ujawnienia dotyczące determinant oszacowania wartości ekono- micznej operacyjnych aktywów trwałych na potrzeby przeprowadzenia testu na utratę ich wartości zgod- nie z postanowieniami MSR nr 36.

  15. Evaluation of radioiodine therapy with fixed doses of 10 and 15 mCi in patients with Graves disease; Avaliacao da radioiodoterapia com doses fixas de 10 e 15 mCi em pacientes com doenca de Graves

    Energy Technology Data Exchange (ETDEWEB)

    Canadas, Viviane; Vilar, Lucio; Moura, Eliane; Brito, Ana; Castellar, Enio [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Hospital das Clinicas. Servico de Endocrinologia]. E-mail: vivi2207@ig.com.br

    2007-10-15

    The treatment options for the hyperthyroidism of Graves' disease are antithyroid drugs, surgery and radioiodine, none of which is considered ideal, as they do not act directly on the etiopathogenesis of the disease. Radioiodine has been increasingly used as the treatment of choice because it is a safe and definitive therapy whose administration is very easy. Some authors prefer to administer higher doses in order to deliberately induce hypothyroidism, while others recommend lower doses that result in a lower incidence of hypothyroidism and a greater incidence of euthyroidism. There is no consensus for the optimal regimen of fixed doses to be used and this is the main focus of the present study, where doses of 10 and 15 mCi of {sup 131}I were compared. Among the 164 patients analyzed, 61 (37.2%) were submitted to 10 mCi and 103 (62.8%) to 15 mCi. In the longitudinal analysis it was observed that remission of the hyperthyroidism was statistically different in the sixth month (p < 0.001), being higher in the group that used the dose of 15 mCi, but similar in both groups at 12 and 24 months. It may be concluded that the administration of fixed doses of 10 and 15 mCi of {sup 131}I brought about a similar remission of the hyperthyroidism after 12 months of treatment. Moreover, the remission rate of the hyperthyroidism had no association with age, sex or previous therapy with antithyroid drugs. (author)

  16. „Pokłosie”, poGrossie i kibice polskości

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    Piotr Forecki

    2014-06-01

    Full Text Available "Aftermath", after-Gross and the fans of Polishness Aftermath was released in the late 2012. Its director, Władysław Pasikowski, had previously been famous for his violent action films with strong male protagonists. He has also written some of the most sexist dialogues in the history of Polish cinema, as well as a number of lines, often obscene, which have become catchphrases and slogans present every day in the pop culture. His latest film, however, tackles a completely different issue – this thriller-cum-western tells a story that is decidedly contemporary, but nevertheless inspired by the events that took place in Jedwabne (described by Jan Tomasz Gross in his book Neighbors. Aftermath does not attempt to provide a reconstruction of the events that took place “on the margins of the Holocaust” (including Jedwabne. However, it clearly hints at the issue of the Polish contribution to the extermination of Jews and the impact of the conspiracy of silence having been broken. The film gave rise to a heated debate, which rippled through the Polish media for as long as two months after its release. This article is an attempt to analyse and interpret the words and ideas that appeared in the debate.   „Pokłosie”, poGrossie i kibice polskości Wraz z końcem 2012 roku odbyła się premiera filmu fabularnego Pokłosie w reżyserii Władysława Pasikowskiego. Ten bardzo popularny polski reżyser znany był dotychczas przede wszystkim z mocnych filmów sensacyjnych o twardych mężczyznach. Zasłynął także jako autor bodaj najbardziej seksistowskich dialogów w polskim kinie oraz rozmaitych i częstokroć wulgarnych kwestii wypowiadanych przez bohaterów, z których wiele do dziś funkcjonuje w popkulturze na prawach popularnych cytatów. W swoim najnowszym filmie Pasikowski sięgnął jednak po zupełnie inny temat. W konwencji thrillera z elementami westernu opowiedział historię jak najbardziej współczesną, ale w zdecydowany sp

  17. OCENA WŁAŚCIWOŚCI PRZECIWPOŚLIZGOWYCH NAWIERZCHNI DROGOWYCH PRZY WYKORZYSTANIU URZĄDZEŃ TWO, CTM I DFT

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    Marta WASILEWSKA

    2016-07-01

    Full Text Available Kompleksowa ocena właściwości przeciwpoślizgowych powinna być wykonywana w oparciu o ciągły pomiar współczynnika tarcia oraz parametrów dotyczących tekstury nawierzchni drogowych. W artykule przedstawiono ocenę właściwości przeciwpoślizgowych nawierzchni drogowych przeprowadzoną na podstawie pomiarów wykonanych zestawem pomiarowym TWO (Traction Watcher One oraz urządzeniami CTM (Circular Track Meter i DFT (Dynamic Friction Tester. Do badań wytypowano 11 odcinków testowych, których warstwy ścieralne były zróżnicowane pod względem technologii wykonania, okresu użytkowania i obciążenia ruchem samochodowym. Przy pomocy urządzenia CTM dokonano oceny makrotekstury (parametr MPD, a przy wykorzystaniu urządzenia DFT oceniano w sposób pośredni mikroteksturę powierzchni (współczynnik tarcia DFT20. Urządzenie TWO umożliwiło ciągły pomiar współczynnika tarcia z ustalonym poślizgiem 17,8% koła pomiarowego przy trzech prędkościach 30, 60, 90 km/h. W artykule ustalono zależności funkcyjne pomiędzy współczynnikiem tarcia µ z pomiarów TWO, a współczynnikiem DFT20 i parametrem MPD. Wykazano, że na wartość µ przy prędkości 30 km/h istotny wpływ ma jedynie mikrotekstura nawierzchni, a przy prędkości 60 i 90 km/h zarówno mikrotekstura i makrotekstura.

  18. Estudos da Semiótica na Ciência da Informação: relatos de interdisciplinaridades

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    Camila Monteiro de Barros

    Full Text Available Semiótica e Ciência da Informação (CI apresentam linhas interdisciplinares de estudo, uma vez que a primeira explora os processos de significação com específica propriedade e a segunda tem, nos processos de significação, um importante aspecto que impacta no dimensionamento e tratamento do seu objeto de estudo. O intuito deste artigo é investigar a interdisciplinaridade entre a Semiótica e a CI, por meio do mapeamento dos temas das duas ciências, que são postos em convergência. A pesquisa se caracteriza como bibliográfica, cujo levantamento foi realizado em periódicos brasileiros da área de CI, de qualis A2 a B2, no período entre 2000 e 2011. Foram recuperados 15 documentos e os resultados mostram que mais de 60% dos artigos abordam a teoria da tricotomia do signo de Peirce, sendo que quase todos os artigos abordam, de alguma forma, a noção da significação ad infinitum. No âmbito da Ciência da Informação, 60% dos artigos abordam a organização e representação do conhecimento e da informação. Conclui-se que o âmbito de estudo mais produtivo da Semiótica na CI seria aquele relacionado à organização e representação do conhecimento e, também, à organização da informação.

  19. Zróżnicowanie zawartości Cd, Pb, Zn i Cu w biomasie wykorzystywanej na cele energetyczne

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    Artur Szwalec

    2016-12-01

    Full Text Available Spalaniu węgla kamiennego, na którym oparta jest Polska energetyka, towarzyszy współspalanie biomasy. Wykorzystanie tego odnawialnego źródła energii może nieść również zagrożenia wynikające z potencjalnego zanieczyszczenia biomasy metalami ciężkimi. Celem pracy była ocena zróżnicowania zawartość Cd, Pb, Zn i Cu w różnych rodzajach biomasy wykorzystywanej do produkcji energii elektrycznej w jednej z polskich elektrowni. Biomasę mineralizowano na sucho. Zawartości analizowanych pierwiastków oznaczono metodą FAAS. Rodzaj analizowanej biomasy miał wpływ na zwartość badanych metali. Zawartości kadmu, ołowiu, cynku w poszczególnych rodzajach biomasy cechowały się dużym zróżnicowaniem, współczynnik zmienności wyniósł odpowiednio 92% (Cd, 89% (Pb i 80% (Cu. Zmienność zawartość cynku była średnio zróżnicowana (V = 37%. Zawartości kadmu w pelecie ze słomy i brykiecie drzewnym oraz zawartości cynku i miedzi w wytłokach z oliwek, pelecie ze słonecznika, pelecie ze słomy i brykiecie drzewnym przekraczały wartości typowe dla tych rodzajów biomasy zamieszczone w normie.

  20. Computer-assisted CI fitting: Is the learning capacity of the intelligent agent FOX beneficial for speech understanding?

    Science.gov (United States)

    Meeuws, Matthias; Pascoal, David; Bermejo, Iñigo; Artaso, Miguel; De Ceulaer, Geert; Govaerts, Paul J

    2017-07-01

    The software application FOX ('Fitting to Outcome eXpert') is an intelligent agent to assist in the programing of cochlear implant (CI) processors. The current version utilizes a mixture of deterministic and probabilistic logic which is able to improve over time through a learning effect. This study aimed at assessing whether this learning capacity yields measurable improvements in speech understanding. A retrospective study was performed on 25 consecutive CI recipients with a median CI use experience of 10 years who came for their annual CI follow-up fitting session. All subjects were assessed by means of speech audiometry with open set monosyllables at 40, 55, 70, and 85 dB SPL in quiet with their home MAP. Other psychoacoustic tests were executed depending on the audiologist's clinical judgment. The home MAP and the corresponding test results were entered into FOX. If FOX suggested to make MAP changes, they were implemented and another speech audiometry was performed with the new MAP. FOX suggested MAP changes in 21 subjects (84%). The within-subject comparison showed a significant median improvement of 10, 3, 1, and 7% at 40, 55, 70, and 85 dB SPL, respectively. All but two subjects showed an instantaneous improvement in their mean speech audiometric score. Persons with long-term CI use, who received a FOX-assisted CI fitting at least 6 months ago, display improved speech understanding after MAP modifications, as recommended by the current version of FOX. This can be explained only by intrinsic improvements in FOX's algorithms, as they have resulted from learning. This learning is an inherent feature of artificial intelligence and it may yield measurable benefit in speech understanding even in long-term CI recipients.

  1. Causal judgment from contingency information: a systematic test of the pCI rule.

    Science.gov (United States)

    White, Peter A

    2004-04-01

    Contingency information is information about the occurrence or nonoccurrence of an effect when a possible cause is present or absent. Under the evidential evaluation model, instances of contingency information are transformed into evidence and causal judgment is based on the proportion of relevant instances evaluated as confirmatory for the candidate cause. In this article, two experiments are reported that were designed to test systematic manipulations of the proportion of confirming instances in relation to other variables: the proportion of instances on which the candidate cause is present, the proportion of instances in which the effect occurs when the cause is present, and the objective contingency. Results showed that both unweighted and weighted versions of the proportion-of-confirmatory-instances rule successfully predicted the main features of the results, with the weighted version proving more successful. Other models, including the power PC theory, failed to predict the results.

  2. O modus tollens, o holismo de Duhem-Quine e as ciências sociais

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    Freitas Renan Springer de

    2001-01-01

    Full Text Available The idea that scientific interference consists of the exercise of directing the modus tollens to given statements currently enjoys canonical status in the social sciences. This idea requires that statements about the world have a supply of empirical consequences that can be isolated and referred to as proper to them. However, according to Duhem-Quine?s holistic vision of knowledge, such a demand cannot be met. This article discusses the implications, for the social sciences, of the holistic critique towards the canonical model of scientific interference, given that two pillars of this area of knowledge, i.e., Suicide, by Émile Durkheim, and The Protestant Ethic and the Spirit of Capitalism, by Max Weber, are tributaries of said canonical model.

  3. Badanie nieliniowych właściwości optycznych nanostruktur plazmonicznych

    OpenAIRE

    Kolkowski , Radoslaw

    2016-01-01

    The aim of this thesis and the underlying research work is to demonstrate the benefits emerging from combination of the peculiar properties of plasmonic nanostructures with the most interesting aspects of nonlinear optics. For this purpose, analytical and numerical modeling was combined with experimental work, which included nanofabrication and measurements performed by means of polarization-resolved nonlinear confocal microscopy and by modified Z-scan technique (called "f-scan").It has been ...

  4. Wpływ informacji medialnej na odtwarzanie pamięci zdarzeń

    OpenAIRE

    Śliwerski, Andrzej

    2008-01-01

    This article focuses on the assessment of the credibility of the witnesses’ testimony. Conway model of autobiographical memory, and the theory of incorrect attribution sources indicates that our memory is based both on the original record of events and on additional information. If the new information is incorrect, the memory may become distorted. In the first part of the article are described mechanisms of autobiographical memory, which can lead to distortions of the original memory trace...

  5. O Instituto Brasileiro de Educação, Ciência e Cultura e a institucionalização da ciência no Brasil, 1946-1966

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    Antonio Carlos Souza de Abrantes

    Full Text Available O Instituto Brasileiro de Educação, Ciência e Cultura (IBECC foi criado como Comissão Nacional da Organização das Nações Unidas para a Educação, a Ciência e a Cultura (UNESCO no Brasil, logo após o fim da Segunda Guerra Mundial, com o objetivo de atuar em projetos naquelas áreas. O artigo analisa o desenvolvimento desse projeto, em particular em São Paulo, onde cientistas e educadores se engajaram em uma experiência inovadora em termos de divulgação científica e ensino de ciências, por meio de feiras, concursos, produção de material didático e kits de experimentação.

  6. O ensino informal de ciências: de sua viabilidade e interação com o ensino formal à concepção de um centro de ciências

    OpenAIRE

    Gaspar, Alberto; UENF - Rio de Janeiro

    1992-01-01

    Dentre as formas de educação formal, não formal e informal, destacase a dificuldade de aceitação de uma educação informal de ciências. Apresenta-se o conceito de alfabetização em ciências como justificativa a essa educação informal, tendo em vista as limitações apresentadas, nessa área, pelas outras formas de educação. Discute-se, ainda, a interação entre a educação informal e formal, a partir de indicações da teoria de Vygotsky, e propõe-se a concepção de um centro de ci...

  7. Alicja w krainie nierówności. Recenzja książki Alicji Zawistowskiej: Horyzontalne nierówności edukacyjne we współczesnej Polsce. Warszawa: Wydawnictwo Naukowe Scholar 2012, stron 229

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    Zbigniew Sawiński

    2013-03-01

    Full Text Available Autorka rozpoczyna od omówienia teorii nierówności edukacyjnych, które pojawiły się na świecie w ciągu ostatniego półwiecza. Przegląd ten jest aktualny i kompletny, przez co stanowi użyteczne kompendium wiedzy dla badaczy i polityków oświatowych. W celu poddania analizie danych empirycznych autorka wybrała ujęcie horyzontalne, w którym bada się czynniki wyboru jednej z alternatywnych ścieżek kształcenia. Zamieszczone w książce analizy dotyczą wpływu środowiska społecznego uczniów na: (a wybór gimnazjum (w podziale na publiczne i prywatne, (b wybór szkoły ponadgimnazjalnej oraz (c wybór uczelni i kierunku studiów. Książka w przekonujący sposób uzasadnia korzyści z zastosowania ujęcia horyzontalnego do analizy nierówności edukacyjnych w Polsce, mimo że prezentowane wnioski mają charakter fragmentaryczny i nie składają się na obraz całej edukacji. Wynika to ze słabości dostępnych danych, które pochodzą z badań prowadzonych w ramach różnych perspektyw metodologicznych, zaś ich część ma zasięg lokalny. Pomimo tych ograniczeń, książka stanowi wartościowe podsumowanie aktualnej wiedzy na temat nierówności horyzontalnych w Polsce a zarazem wskazuje obszary, które wymagają dalszych badań.

  8. Da educação em ciência às orientações para o ensino das ciências: um repensar epistemológico From Science Education to Science Teaching: an epsitemological rethinking

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    António Cachapuz

    2004-12-01

    Full Text Available No presente artigo, discute-se a construção epistemológica da Educação em Ciência como área interdisciplinar que integra, por apropriações e transposições educacionais, campos relevantes do saber, nomeadamente a Filosofia da Ciência, a História da Ciência, a Sociologia da Ciência e a Psicologia Educacional. Desenvolvem-se, em seguida, argumentos de natureza curricular e de política educativa4 que procuram clarificar, afinal, para quê e para quem a Educação em Ciência. Debruçamo-nos, necessariamente, por fim, sobre o ensino das Ciências e suas orientações preferenciais e que se perfilam como as mais congruentes com os referenciais teóricos enunciados. Note-se que esse percurso de pesquisa/teoria/prática exige reflexão, tempo, maturação de idéias, cumplicidade com a inovação e empenho na ação.The paper starts with a brief description of the epistemological construction of Science Education and its interdisciplinary character, in particular the contributions of the Philosophy of Science, History of Science, Sociology of Science and Educational Psychology. Secondly, arguments are developed in order to find out appropriate answers to two key educational issues, namely, the purpose of science education and who science education is for. Finally, the paper characterizes three main orientations for science teaching based on the previously developed framework.

  9.  Motywy wyboru wartości godziwej do wyceny środków trwałych w świetle pozytywnej teorii rachunkowości

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    Katarzyna Bareja

    2016-07-01

    Full Text Available Celem artykułu jest zidentyfikowanie przyczyn wyboru wartości godziwej do wyceny środków trwałych w świetle trzech podstawowych hipotez pozytywnej teorii rachunkowości, sformułowanych przez Wattsa i Zimmermana. Stwierdzono, że podstawowym motywem jest dążenie do poprawy wskaźnika długu do kapitału własnego. W artykule wykorzystano metodę wnioskowania indukcyjnego.

  10. [Dance projects as an integral part of CI rehabilitation and their impact on mental health: a pilot study].

    Science.gov (United States)

    Klink, B; Praetorius, M; Roder, S; Hintermair, M

    2014-07-01

    Alongside improvements in hearing and communication skills, the rehabilitation of children, adolescents and adults with a cochlear implant (CI) in recent years has increasingly taken into account mental health and quality of life issues. In the context of the programs offered, this study assesses the significance of dance for the mental health of adult clients with a CI. Eleven adult CI users participated in a dance project, which took place as a cooperation between the ENT University Hospital Heidelberg and the Baden State Theatre Karlsruhe. Participants were questioned at two different time points for assessment with the mental health scales (SPG). These scales measure seven different aspects of psychosocial well-being (including autonomy, willpower, affirmation of life and meaningfulness). Significant positive changes in the domains of affirmation of life, self-reflection and social integration were revealed by before and after comparisons; tendencies toward positive change were observed (p ≤ 0.10) in the domains of willpower, naturalness and meaningfulness. No changes were observed in the autonomy domain. The results indicate that the mental health of adult clients with a CI can be strengthened by dance as a complementary rehabilitation module. Concepts of CI rehabilitation should increasingly find anchor in the consideration of such arrangements for its range of offers.

  11. Current status of the Citrus leprosis virus (CiLV -C and its vector Brevipalpus phoenicis (Geijskes

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    Guillermo León M

    2012-08-01

    Full Text Available The Citrus leprosis virus CiLV-C is a quarantine disease of economic importance. Over the past 15 years, this disease has spread to several countries of Central and South America. Colombia has about 45,000 hectares of citrus planted with an annual production of 750,000 tonnes. The CiLV-C has only been detected in the departments of Meta, Casanare and recently Tolima. Meta has 4,300 hectares representing 10% of the national cultivated area, and Casanare, where CiLV-C appeared in 2004, has no more than 500 ha planted with citrus. The presence of the Citrus leprosis virus in Colombia could affect the international market for citrus, other crops and ornamental plants with the United States and other countries without the disease. The false spider mite Brevipalpus phoenicis (Geijskes (Acari: Tenuipalpidae is the main vector of the CiLV-C. Disease management is based on control programs of the vector and diminishing host plants. Chemical mite control is expensive, wasteful and generates resistance to different acaricides. This paper provides basic information on CiLV-C and its vector, advances in diagnosis and methods to control the disease and prevention of its spread

  12. Od konsekwencji do antecedencji – zmiana orientacji pomiaru we współczesnej rachunkowości

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    Monika Łada

    2017-07-01

    Full Text Available Masowa cyfryzacja rzeczywistości gospodarczej ma ogromny wpływ na teorię i praktykę rachunkowości. Zmiany obserwowane w podejściu do pomiaru ekonomicznego, będące efektem rozwoju fenomenu big data są wielowymiarowe. Jednym z interesujących aspektów dostępności dużych cyfrowych zbiorów danych jest możliwość łączenia wyceny efektów działań biznesowych z sygnałami o ich antecedencjach. Celem artykułu jest wskazanie na pomiar antecedencji przyszłej sytuacji ekonomicznej jako ważnego obszaru współczesnej rachunkowości. Artykuł został przygotowany na podstawie przeglądu literatury przedmiotu. Przedstawione rozważania prowadzą do wniosku, że dynamiczny rozwój technologii informatycznych sprzyja rozszerzaniu zakresu pomiaru ekonomicznego – od konsekwencji zdarzeń gospodarczych po ich antecedencje, a to wymaga rozwoju nowych metod rachunkowości.

  13. Citrus leprosis virus cytoplasmic type 2 (CiLV-C2 detection in Meta and Casanare States

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    Guillermo León

    2014-07-01

    Full Text Available This study discusses the diagnosis and detection of the new citrus leprosis virus cytoplasmic type 2 (CiLV-C2 in samples collected in Meta and Casanare States, using molecular techniques performed RT-PCR on plant tissue and mite vectors Brevipalpus phoenicis (Geijskes. RT-PCR tests were carry out using specific primers MP and CPG. The use of CPG primers allows the detection of CiLV-C2, in tissue plant samples with leprosis symptoms on fruits and leaves of Valencia orange (Citrus sinensis L. and Swinglea gluinosa Merr. leaves, which confirms the presence of this virus in Colombia. The MP primers did not detect the CiLV-C2 in any of performed tests. The RT-PCR technique allows detection of CiLV-C2 in samples of B. phoenicis mite vectors, with the specific CPG primers. Molecular detection of CiLV-C2 by RT-PCR technique is a fundamental tool for the virus diagnosis in Colombia, and should be used in diagnosis and prevention programs of citrus leprosis in the country.

  14. Realismo crítico: um programa de pesquisa para as Ciências Sociais

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    Hamlin Cynthia Lins

    2000-01-01

    Full Text Available The article describes critical realism as a philosophical approach that stresses some themes central to all sociological thought: the relation between philosophy and sociology; the notion of cause; the problem of naturalism; the relation between concepts, models, and reality; the relation between agency and structure, and so on. It is further argued that in positing the non-dissolution of the ontological and epistemological dimensions of knowledge, critical realism may represent a viable alternative to the dead-ends of conventionalism and skepticism found in the positivist and pragmatist approaches.

  15. Co jest stawką mobilności pracy? Granice, migracje, współczesny kapitalizm

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    Sandro Mezzadra

    2016-09-01

    Full Text Available Prezentowany tekst rozpoczyna się od krótkiego omówienia kilku wpływowych badań na temat mobilności pracy w ramach historycznego i współczesnego kapitalizmu. Później, opierając się na ustaleniach z ostatniej książki autora, Border as Method, or, the Multiplication of Labour (napisanej razem z Brettem Neilsonem, przechodzi do namysłu nad znaczeniem upowszechnienia się granic w epoce globalizacji z perspektywy „późnego” kapitalizmu. W ostatniej części autor skupia się na podmiotowym wymiarze polityki migracji, dostarczając w tym kontekście wielu przykładów z różnych części świata (w tym z regionu Pacyfiku.

  16. O ensino de conteúdos de História e Filosofia da Ciência

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    Fernando Bastos

    1998-01-01

    Full Text Available O presente trabalho de pesquisa consistiu em duas etapas: (i produção de um Guia de Estudos em que a história das pesquisas sobre a febre amarela (1881-1903 foi usada como subsídio para a discussão de alguns importantes aspectos do processo de produção de conhecimentos na ciência; (ii realização de experiência pedagógica em que o Guia de Estudos foi aplicado junto a alunos do ensino médio. Os resultados obtidos forneceram evidência da viabilidade do uso da História da Ciência no Ensino de Ciências.

  17. Od konsekwencji do antecedencji – zmiana orientacji pomiaru we współczesnej rachunkowości

    OpenAIRE

    Monika Łada

    2017-01-01

    Masowa cyfryzacja rzeczywistości gospodarczej ma ogromny wpływ na teorię i praktykę rachunkowości. Zmiany obserwowane w podejściu do pomiaru ekonomicznego, będące efektem rozwoju fenomenu big data są wielowymiarowe. Jednym z interesujących aspektów dostępności dużych cyfrowych zbiorów danych jest możliwość łączenia wyceny efektów działań biznesowych z sygnałami o ich antecedencjach. Celem artykułu jest wskazanie na pomiar antecedencji przyszłej sytuacji ekonomicznej jako ważnego obszaru współ...

  18. Determinanty przestrzennego zróżnicowania płodności w Polsce w latach 1999-2009

    OpenAIRE

    Małgorzata Podogrodzka

    2012-01-01

    Obserwowane od lat zmiany w natężeniu dzietności oraz wzorca płodności w Polsce nie przebiegają podobnie według województw. Celem artykułu jest ukazanie tych przekształceń oraz określenie czynników je determinujących. Zakładamy, że w regionach charakteryzujących się wyższym zagrożeniem bezrobocia oraz „nowoczesnym” stylem życia będziemy mogli zaobserwować niższą płodność oraz wyższe zaawansowanie wzorca płodności. W przypadku zmiennych określających stabilność zatrudnienia oraz lepszą dostępn...

  19. A SBPC e a informação ambiental no Brasil: o papel da revista Ciência Hoje

    Directory of Open Access Journals (Sweden)

    Antonio Teixeira De Barros

    Full Text Available Analisa u informação ambiental divulgada pela revista Ciência Hoje, editada pela Sociedade Brasileira para o Progresso da Ciência (SBPC, desde o primeiro número da revista até a realização da Eco 92. A divulgação concentra-se nos estudos de avaliação de impactos e efeitos da degradação ambiental e nos temas globais da agenda ecológica. O didatismo é uma das características principais de Ciência Ho je, com o intuito de facilitar a leitura por parte do público leigo.

  20. A Ciência de Freud: introdução ao problema da cientificidade da psicanálise

    Directory of Open Access Journals (Sweden)

    Nathalia Sisson

    2010-04-01

    Full Text Available Apresenta-se primeiramente a concepção de Freud do que seria a Ciência e em que constituiria a atividade cientifica, utilizando-se textos freudianos nos quais ele trabalha esse tema. Considera-se as noções de Naturwissenchaft e Geistwissenchaft para contextualizar a discussão sobre a cientificidade da Psicanálise à época de Freud. Confronta-se então a Ciência, como entendida por Freud, com as concepções de Popper e Bachelard, oriundos da Epistemologia. Posteriormente, apresentamos diferentes posições de psicanalistas, como Lacan e Kernberg, quanto ao mesmo tema, para mostrar como a compreensão do que seja a Ciência determina os posicionamentos quanto à relação entre esta e a Psicanálise.

  1. Skutki utraty stateczności kombajnu ścianowego w trakcie urabiania calizny węglowej

    Directory of Open Access Journals (Sweden)

    Marek Jaszczuk

    2017-04-01

    Full Text Available W artykule omówiono skutki utraty stateczności kombajnu ścianowego z uwzględnieniem każdej możliwej krawędzi wywrotu. Wśród wszystkich przypadków najistotniejszy, z punktu widzenia bezpieczeństwa załogi oraz efektywności pracy kombajnu, okazał się przypadek, w którym krawędź wywrotu jest równoległa do osi wzdłużnej kombajnu, usytuowana od strony zrobów. W tym przypadku dochodzi do zagłębiania się organu przedniego w skały stropowe. Zaprezentowano przykładowe wartości momentu obrotowego na organie urabiającym w przypadku, w którym kombajn utracił stateczność.

  2. Final Report: Utilizing Alternative Fuel Ignition Properties to Improve SI and CI Engine Efficiency

    Energy Technology Data Exchange (ETDEWEB)

    Wooldridge, Margaret; Boehman, Andre; Lavoie, George; Fatouraie, Mohammad

    2017-11-30

    Experimental and modeling studies were completed to explore leveraging physical and chemical fuel properties for improved thermal efficiency of internal combustion engines. Fundamental studies of the ignition chemistry of ethanol and iso-octane blends and constant volume spray chamber studies of gasoline and diesel sprays supported the core research effort which used several reciprocating engine platforms. Single cylinder spark ignition (SI) engine studies were carried out to characterize the impact of ethanol/gasoline, syngas (H2 and CO)/gasoline and other oxygenate/gasoline blends on engine performance. The results of the single-cylinder engine experiments and other data from the literature were used to train a GT Power model and to develop a knock criteria based on reaction chemistry. The models were used to interpret the experimental results and project future performance. Studies were also carried out using a state of the art, direct injection (DI) turbocharged multi- cylinder engine with piezo-actuated fuel injectors to demonstrate the promising spray and spark timing strategies from single-cylinder engine studies on the multi-cylinder engine. Key outcomes and conclusions of the studies were: 1. Efficiency benefits of ethanol and gasoline fuel blends were consistent and substantial (e.g. 5-8% absolute improvement in gross indicated thermal efficiency (GITE)). 2. The best ethanol/gasoline blend (based on maximum thermal efficiency) was determined by the engine hardware and limits based on component protection (e.g. peak in-cylinder pressure or maximum turbocharger inlet temperature) – and not by knock limits. Blends with <50% ethanol delivered significant thermal efficiency gains with conventional SI hardware while maintain good safety integrity to the engine hardware. 3. Other compositions of fuel blends including syngas (H2 and CO) and other dilution strategies provided significant efficiency gains as well (e.g. 5% absolute improvement in ITE). 4. When the

  3. An improved cirrus detection algorithm MeCiDA2 for SEVIRI and its evaluation with MODIS

    Directory of Open Access Journals (Sweden)

    F. Ewald

    2013-02-01

    Full Text Available In this study, a substantially improved version of the Meteosat cirrus detection algorithm (MeCiDA2 will be presented, which now allows application to the full earth disc visible by the Meteosat satellite. As cirrus clouds have an influence on the radiation budget of the earth, their optical properties and their global coverage has to be monitored at the global scale using instruments aboard geostationary satellites. Since MeCiDA was optimised for the area of Europe only, various changes were necessary to handle the variable conditions found over the full Meteosat disc. Required changes include the consideration of the viewing angle dependency and of the sensitivity of the 9.7 μm channel to the ozone column. To this end, a correction is implemented that minimises the influence of the variability of the stratospheric ozone. The evaluation of the proposed improvements is carried out by using MeCiDA applied to MODIS (moderate resolution imaging spectrometer data to address viewing angle-dependent cirrus detection, and by additionally comparing it to the cloud optical properties MOD06 cirrus product. The new MeCiDA version detects less cirrus than the original one for latitudes larger than 40°, but almost the same amount elsewhere. MeCiDA's version for MODIS is more sensitive than that for SEVIRI (spinning enhanced visible and infrared imager with cirrus occurrences higher by 10%, and the new MeCiDA provides almost the same cirrus coverage (±0.1 as given by the cloud phase optical properties from MODIS for latitudes smaller than 50°. Finally, the influence of sub-pixel clouds on the SEVIRI cirrus detection has been examined: more than 60% of the undetected SEVIRI cirrus pixels have a cirrus coverage smaller than 0.5.

  4. SiRNA-mediated knockdown of CiGRP78 gene expression leads cell susceptibility to heavy metal cytotoxicity.

    Science.gov (United States)

    Zhong, Bin; Mao, Huiling; Fan, Qidi; Liu, Yong; Hu, Yousheng; Mi, Yichuan; Wu, Fan; Hu, Chengyu

    2014-12-01

    Heavy metal ion is one of the critical environmental pollutants accumulated in living organisms and causes toxic or carcinogenic effects once passed threshold levels. As an important member of Hsp70 (heat shock protein 70) family, the 78-kDa glucose-regulated protein (GRP78) can enhance cell survival rates remarkably under thermal stress. Recent studies also demonstrated that the expression of GRP78 enhances the cell survival under heavy metal stress. In this study, three most representative heavy metal ions, Pb(2+), Hg(2+) and Cd(2+), were used to stimulate Ctenopharyngodon idella kidney (CIK) cells. The results showed that cell viability under Pb(2+), Hg(2+) and Cd(2+) stress decreased significantly. The longer and the greater the concentrations of stimulation from heavy metal ions, the higher the rate of cell death was observed. Among them, Hg(2+) is the most hazardous to cells. Under the same stress condition, Hg(2+) resulted in 50% of cell death, Cd(2+) (or Pb(2+)) led to 45% (or 35%) of cell death, respectively. Western immunoblotting indicated that C. idella GRP78 (CiGRP78) protein expression level was enhanced obviously in CIK cells under Pb(2+), Hg(2+) and Cd(2+) stress, meaning CiGRP78 is involved in heavy metal cytotoxicity. To further study the role of CiGRP78 in cytoprotection, we designed the siRNA against CiGRP78 (from nucleotides +788 to +806) and transfected it into CIK cells to silence endogenous CiGRP78. The viability rate of CIK cells transfected with or without siRNA incubated with HgCl2 for 12h showed a significant decrease from 50% to 21%. Our results showed that CiGRP78 protects cells against heavy metal stimuli to some extent. Copyright © 2014 Elsevier B.V. All rights reserved.

  5. Technical note: A new day- and night-time Meteosat Second Generation Cirrus Detection Algorithm MeCiDA

    Directory of Open Access Journals (Sweden)

    W. Krebs

    2007-12-01

    Full Text Available A new cirrus detection algorithm for the Spinning Enhanced Visible and Infra-Red Imager (SEVIRI aboard the geostationary Meteosat Second Generation (MSG, MeCiDA, is presented. The algorithm uses the seven infrared channels of SEVIRI and thus provides a consistent scheme for cirrus detection at day and night. MeCiDA combines morphological and multi-spectral threshold tests and detects optically thick and thin ice clouds. The thresholds were determined by a comprehensive theoretical study using radiative transfer simulations for various atmospheric situations as well as by manually evaluating actual satellite observations. The cirrus detection has been optimized for mid- and high latitudes but it could be adapted to other regions as well. The retrieved cirrus masks have been validated by comparison with the Moderate Resolution Imaging Spectroradiometer (MODIS Cirrus Reflection Flag. To study possible seasonal variations in the performance of the algorithm, one scene per month of the year 2004 was randomly selected and compared with the MODIS flag. 81% of the pixels were classified identically by both algorithms. In a comparison of monthly mean values for Europe and the North-Atlantic MeCiDA detected 29.3% cirrus coverage, while the MODIS SWIR cirrus coverage was 38.1%. A lower detection efficiency is to be expected for MeCiDA, as the spatial resolution of MODIS is considerably better and as we used only the thermal infrared channels in contrast to the MODIS algorithm which uses infrared and visible radiances. The advantage of MeCiDA compared to retrievals for polar orbiting instruments or previous geostationary satellites is that it permits the derivation of quantitative data every 15 min, 24 h a day. This high temporal resolution allows the study of diurnal variations and life cycle aspects. MeCiDA is fast enough for near real-time applications.

  6. Technical note: A new day- and night-time Meteosat Second Generation Cirrus Detection Algorithm MeCiDA

    Science.gov (United States)

    Krebs, W.; Mannstein, H.; Bugliaro, L.; Mayer, B.

    2007-12-01

    A new cirrus detection algorithm for the Spinning Enhanced Visible and Infra-Red Imager (SEVIRI) aboard the geostationary Meteosat Second Generation (MSG), MeCiDA, is presented. The algorithm uses the seven infrared channels of SEVIRI and thus provides a consistent scheme for cirrus detection at day and night. MeCiDA combines morphological and multi-spectral threshold tests and detects optically thick and thin ice clouds. The thresholds were determined by a comprehensive theoretical study using radiative transfer simulations for various atmospheric situations as well as by manually evaluating actual satellite observations. The cirrus detection has been optimized for mid- and high latitudes but it could be adapted to other regions as well. The retrieved cirrus masks have been validated by comparison with the Moderate Resolution Imaging Spectroradiometer (MODIS) Cirrus Reflection Flag. To study possible seasonal variations in the performance of the algorithm, one scene per month of the year 2004 was randomly selected and compared with the MODIS flag. 81% of the pixels were classified identically by both algorithms. In a comparison of monthly mean values for Europe and the North-Atlantic MeCiDA detected 29.3% cirrus coverage, while the MODIS SWIR cirrus coverage was 38.1%. A lower detection efficiency is to be expected for MeCiDA, as the spatial resolution of MODIS is considerably better and as we used only the thermal infrared channels in contrast to the MODIS algorithm which uses infrared and visible radiances. The advantage of MeCiDA compared to retrievals for polar orbiting instruments or previous geostationary satellites is that it permits the derivation of quantitative data every 15 min, 24 h a day. This high temporal resolution allows the study of diurnal variations and life cycle aspects. MeCiDA is fast enough for near real-time applications.

  7. CiSE Computational Physics Challenge Winner: Electron Wave Packet Propagation in Graphene Nanoribbons

    Science.gov (United States)

    Anton, Steven M.

    2008-04-01

    While graphene has been studied by theoreticians for over half a century, the two dimensional crystal lattice has only recently been realized experimentally. As such, theoretical work in the properties of graphene has exploded. A variety of these properties, which are truly exceptional and unique, have engendered much research into carbon based electronics, of which graphene is generally the most fundamental unit. In this thesis, we seek to characterize basic electronic properties of graphene nanoribbons. We begin with a tight-binding model of graphene and an analysis of the electronic band structure of the infinite sheet and semi-infinite nanoribbons. Also employing the spectral method, we create, inject, and propagate various types of wave packets infinite wires. A key effect that is expected is the so called Zitterbewegung oscillation of the wave packet center. Results are compared to theoretical predictions based on analytical methods rather than numerical simulations.

  8. Inhibition of Ps Formation in Benzene and Cyclohexane by CH3CI and CH3Br

    DEFF Research Database (Denmark)

    Wikander, G.; Mogensen, O. E.; Pedersen, Niels Jørgen

    1983-01-01

    Positron-annihilation lifetime spectra have been measured for mixtures of CH3Cl and CH3Br in cyclohexane and of CH3Cl in benzene. The ortho-positronium (Ps) yield decreased monotonically from 38% and 43% in cyclohexane and benzene respectively to 11% in pure CH3Cl and 6% in pure CH3Br. The strength......− anions to form Ps. while it forms a bound state with the halides. X−. CH3Cl was a roughly three times weaker Ps inhibitor in benzene than in cyclohexane, which shows that CH3Cl− does not dechlorinate in times comparable to or shorter than 400–500 ps in benzene. An improved model for the explanation of Ps...

  9. Interdisciplinaridade na prática pedagógica: ensino e aprendizagem em ciências

    OpenAIRE

    Stamberg, Cristiane da Silva

    2009-01-01

    Esta dissertação tem o objetivo de investigar como a interdisciplinaridade é colocada em prática no trabalho pedagógico dos professores de Ciências do nível fundamental, das escolas de São Luiz Gonzaga, no Estado do Rio Grande do Sul. Para atingir este objetivo o presente estudo analisou os depoimentos e colheu informações diretamente de professores, procurando obter dados sobre as suas concepções e vivências em relação à interdisciplinaridade no ensino de Ciências. O conjunto desses dados, a...

  10. SeDiCI: Servicio de Difusión de la Creación Intelectual

    Directory of Open Access Journals (Sweden)

    Marisa R. de Giusti

    2008-07-01

    Full Text Available Presenta el Servicio de Difusión de la Creación Intelectual (SeDiCI de la Universidad Nacional de La Plata (UNLP, Argentina, desde el punto de vista de los objetivos que condujeron a la UNLP a su creación. Se describen en detalle las etapas por las que se atravesó para poner en marcha este repositorio institucional y especialmente las facilidades que provee el software Celsius-DL desarrollado en la UNLP que soporta el Portal de SeDiCI.

  11. Bioética clínica: ciência e humanidade = Clinical bioethics: science and humanity

    Directory of Open Access Journals (Sweden)

    Batista, Cristiano Corrêa

    2005-01-01

    Resultados e conclusão: Nossa conclusão é de a medicina não ser apenas uma ciência, mas também uma arte. Ela exige, em situações particulares, elaborar julgamentos de valor. A Bioética Clínica, surge para guiar caminhos combinando o conhecimento técnico- científico das ciências biomédicas com o conhecimento filosófico. Por meio da Bioética Clínica é possível resgatar os aspectos humanos da arte da medicina

  12. Uma metodologia de ensino de lógica aplicada em cursos de ciências humanas

    OpenAIRE

    Silveira, Denis Silva Da; Loiola, Eliane Maria; Ferreira, Simone Bacellar Leal

    2009-01-01

    O impacto causado pelo uso de novas tecnologias nos diversos setores da atividade econômica requer profundas transformações no processo pedagógico dos cursos superiores de Ciências Humanas e Ciências Sociais Aplicadas, trazendo dificuldade e insegurança para os educadores e coordenadores de instituições de ensino superior. Para alcançar um conhecimento das tecnologias correntes, que possa ser aplicado na solução de problemas reais de diversas naturezas, torna-se essencial o ensino de conceito...

  13. De opressora a oprimida: a ciência, seus críticos e suas críticas

    Directory of Open Access Journals (Sweden)

    Felipe Simão Pontes

    2010-01-01

    Full Text Available http://dx.doi.org/10.5007/1806-5023.2010v7n1/2p131 O livro A Cruzada Contra as Ciências do filósofo, jornalista e professor universitário Orlando Tambosi deflagra um combate contra setores da academia e da religião que atacam a validade do conhecimento científico. Lançado em 2010 pela Editora da UFSC, o livro é indicado para os interessados em ciência, tecnologia, religião e marxismo.

  14. Analiza wielkości i zmienności zużycia wody w kampusie Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

    Directory of Open Access Journals (Sweden)

    Piotr Wichowski

    2015-10-01

    Full Text Available W artykule przedstawiono badania wielkości i zmienności zużycia wody w kampusie SGGW w roku akademickim 2012/13. Przeciętne jednostkowe zużycie wody w okresie, kiedy realizowane są zajęcia dydaktyczne, wyniosło 29,3 dm3·d–1 dla studenta studiów stacjonarnych i 23,2 dm3·d–1 dla studenta studiów niestacjonarnych. W okresie wakacyjnym wskaźniki te są niższe i wynoszą odpowiednio 15,2 oraz 11,4 dm3·d–1. Wskaźniki te wyznaczono bez uwzględnienia zużycia wody w akademikach. Współczynnik nierównomierności dobowej dla całego kampusu wyniósł 1,54 i był zbliżony do współczynnika nierównomierności godzinowej, wynoszącego 1,52. Najwyższe miesięczne zużycie wody wystąpiło w czerwcu i było o 85% większe od najniższego, które wystąpiło w sierpniu. W cyklu tygodniowym najwyższe zużycie wody obserwowano we wtorki, a najniższe w niedziele. Przeciętne rozbiory wtorkowe są wyższe od rozbiorów niedzielnych o 31,5%. Szczyty rozbiorów w ciągu doby przypadały w godzinach 10–15 oraz 23–01.

  15. História e epistemologia da Ciência da Informação: Abordagem social em foco

    Directory of Open Access Journals (Sweden)

    Hamilton Rodrigues Tabosa

    2016-07-01

    Full Text Available O objetivo deste artigo é refletir, principalmente com base em Moscovici e Vygotsky, acerca do desenvolvimento das teorizações sobre as relações existentes entre os estudos com abordagens cognitivas e sociais que aconteciam na Europa dos anos 60, para compreender o momento histórico em que se deu o início da abordagem social por parte da Ciência da Informação (CI enquanto ela se institucionalizava com forte tendência a influências norte-americanas na sua composição epistemológica. Suscita reflexões que partem das representações sociais oriundas da Sociologia, bem como da Psicologia Social para procurar perceber influências e/ou equivalências em relação ao surgimento da abordagem social na CI. Apresenta também, brevemente, a visão de Latour sobre a ideia de purificação e de ciência moderna com o intuito de compreender como a CI se insere nesse quadro teórico. Como resultados, percebeu-se e discutiu-se sobre o retardamento do aparecimento ou da adoção de um caráter social no campo teórico e metodológico da CI, uma ciência não-moderna, aberta a soluções interdisciplinares (fortemente ligadas à Sociologia para alguns de seus problemas de pesquisa e integrante de uma rede de relações sócio técnicas horizontais. O objetivo deste artigo é refletir, principalmente com base em Moscovici e Vygotsky, acerca do desenvolvimento das teorizações sobre as relações existentes entre os estudos com abordagens cognitivas e sociais que aconteciam na Europa dos anos 60, para compreender o momento histórico em que se deu o início da abordagem social por parte da Ciência da Informação (CI enquanto ela se institucionalizava com forte tendência a influências norte-americanas na sua composição epistemológica. Suscita reflexões que partem das representações sociais oriundas da Sociologia, bem como da Psicologia Social para procurar perceber influências e/ou equivalências em relação ao surgimento da abordagem

  16. Canada's experience in applying C&I to measure progress towards SFM - perspectives from the National, Regional and local levels

    Science.gov (United States)

    John E. Hall; S. R. J. Bridge; Brian D. Haddon

    2006-01-01

    This paper will provide perspectives of Canada’s experiences in applying Criteria and Indicators (C&I) to measure progress towards Sustainable Forest Management (SFM) at the National, Regional (Provincial) and local levels. SFM is rooted in Bruntland’s concept of Sustainable Development and is about providing for present forest-based needs without compromising...

  17. The cholecystokinin-B receptor antagonist CI-988 failed to affect CCK-4 induced symptoms in panic disorder patients

    NARCIS (Netherlands)

    vanMegen, HJGM; Westenberg, HGM; denBoer, JA; Slaap, B; vanEsRadhakishun, F; Pande, AC

    The effects of the cholecystokinin-B (CCK-B) receptor antagonist CI-988 on symptoms elicited by the cholecystokinin tetrapeptide (CCK4) were studied in DSM-IIIR patients with panic disorder. The study employed a double-blind, two-period incomplete block design. Patients (n = 14) received two

  18. The role of CI and learning in an organizational change process-Experiences from a longitudinal study of organizational change

    DEFF Research Database (Denmark)

    Kofoed, Lise; Gertsen, Frank; Jørgensen, Frances

    2002-01-01

    Describes a longitudinal single-case study in which continuous improvement (CI) was implemented during a radical organisational change process. In this case, numerous organisation factors greatly hindered the full integration of certain planned radical changes. In an effort to circumvent...... of the case study methodology, two phases of the change process and finally discussion of the findings....

  19. BADANIE MIESZANEK MINERALNO-ASFALTOWYCH W WARUNKACH ŚCINANIA PRZY KONTROLOWANEJ SZTYWNOŚCI WZDŁUŻNEJ

    Directory of Open Access Journals (Sweden)

    Adam ZOFKA

    2016-07-01

    Full Text Available W artykule przedstawiono koncepcję nowej metody badania próbek z mieszanki mineralno-asfaltowej w warunkach ścinania z ciśnieniem bocznym. Dotychczas stosowane metody badawcze ścinania z obciążeniem bocznym opierają się na ocenie właściwości mieszanki mineralno-asfaltowej przy ścinaniu w warunkach stałej siły wzdłużnej lub stałej objętości badanej próbki. Nowa metoda badawcza pozwala na badanie ścinania przy stałej sztywności wzdłużnej. Aby możliwe było badanie według tej metody, zaprojektowano i wykonano specjalną przystawkę o nazwie AST (ang. Advanced Shear Tester. W artykule przedstawiono zarówno opis procesu twórczego podczas projektowania przystawki, jak wykonane urządzenie. Zaprezentowano pierwsze wyniki badań walidacyjnych uzyskanych przy użyciu przystawki na próbkach UHMW-PE oraz z mieszanki mineralno-asfaltowej.

  20. Możliwości wykorzystania MSSF 9 do kształtowania wyniku finansowego jednostki gospodarczej

    Directory of Open Access Journals (Sweden)

    Maciej Frendzel

    2016-09-01

    Full Text Available Artykuł podejmuje problematykę zastosowania Międzynarodowego Standardu Sprawozdawczości Finan- sowej (MSSF 9 Instrumenty finansowe w kontekście możliwości wykorzystania przewidzianych w nim rozwiązań do uzyskania pożądanych rezultatów w zakresie sprawozdawczości finansowej. Celem artykułu jest prezentacja wybranych obszarów rachunkowości instrumentów finansowych, które mogą być wyko- rzystane do kształtowania wyniku finansowego i sytuacji finansowej jednostki gospodarczej w kontek- ście pierwszego zastosowania tej regulacji. W artykule zastosowano metodę krytycznej analizy, wnio- skowania dedukcyjnego oraz studium przypadku. Na potrzeby artykułu i zastosowania studium przypad- ku przeprowadzono dwa wywiady niestrukturyzowane z osobami zajmującymi kierownicze stanowiska w instytucji finansowej w Polsce oraz przeanalizowano przeprowadzone przez nich symulacje.

  1. Plasticity in the Oxidative Folding Pathway of the High Affinity Nerita Versicolor Carboxypeptidase Inhibitor (NvCI).

    Science.gov (United States)

    Esperante, Sebastián A; Covaleda, Giovanni; Trejo, Sebastián A; Bronsoms, Sílvia; Aviles, Francesc X; Ventura, Salvador

    2017-07-14

    Nerita Versicolor carboxypeptidase inhibitor (NvCI) is the strongest inhibitor reported so far for the M14A subfamily of carboxypeptidases. It comprises 53 residues and a protein fold composed of a two-stranded antiparallel β sheet connected by three loops and stabilized by three disulfide bridges. Here we report the oxidative folding and reductive unfolding pathways of NvCI. Much debate has gone on whether protein conformational folding guides disulfide bond formation or instead they are disulfide bonds that favour the arrangement of local or global structural elements. We show here that for NvCI both possibilities apply. Under physiological conditions, this protein folds trough a funnelled pathway involving a network of kinetically connected native-like intermediates, all sharing the disulfide bond connecting the two β-strands. In contrast, under denaturing conditions, the folding of NvCI is under thermodynamic control and follows a "trial and error" mechanism, in which an initial quasi-stochastic population of intermediates rearrange their disulfide bonds to attain the stable native topology. Despite their striking mechanistic differences, the efficiency of both folding routes is similar. The present study illustrates thus a surprising plasticity in the folding of this extremely stable small disulfide-rich inhibitor and provides the basis for its redesign for biomedical applications.

  2. Engineering of a genetically encodable fluorescent voltage sensor exploiting fast Ci-VSP voltage-sensing movements

    DEFF Research Database (Denmark)

    Lundby, Alicia; Mutoh, Hiroki; Dimitrov, Dimitar

    2008-01-01

    Ci-VSP contains a voltage-sensing domain (VSD) homologous to that of voltage-gated potassium channels. Using charge displacement ('gating' current) measurements we show that voltage-sensing movements of this VSD can occur within 1 ms in mammalian membranes. Our analysis lead to development...

  3. Functional and crystallographic characterization of Salmonella typhimurium Cu,Zn superoxide dismutase coded by the sodCI virulence gene

    NARCIS (Netherlands)

    Pesce, A; Battistoni, A; Stroppolo, ME; Polizio, F; Nardini, M; Kroll, JS; Langford, PR; O'Neill, P; Sette, M; Desideri, A; Bolognesi, M

    2000-01-01

    The functional and three-dimensional structural features of Cu,Zn superoxide dismutase coded by the Salmonella typhimurium sodCI gene, have been characterized. Measurements of the catalytic rate indicate that this enzyme is the most efficient superoxide dismutase analyzed so far, a feature that may

  4. A crítica de Charles Taylor ao naturalismo na Ciência Política

    Directory of Open Access Journals (Sweden)

    Tiago Losso

    2011-06-01

    Full Text Available Os mais recentes esforços de revitalização do enfoque interpretativo na Ciência Política têm sua gênese na década de 1960, quando vários autores passaram a advogar a centralidade do estudo dos significados lingüístico e hermenêutico dos fenômenos políticos. Dentre tais autores, destaca-se o filósofo e politólogo Charles Taylor, cujos textos dos anos 1960 e 1970 desferem críticas contundentes ao naturalismo subjacente ao mainstream da Ciência Política da época. Meu objetivo é explorar a crítica de Taylor ao naturalismo, pensadas no contexto de uma proposta de abordagem interpretativa para a Ciência Política. Primeiramente, contextualizarei as contribuições de Taylor no âmbito mais amplo do interpretive turn nas Ciências Sociais. Em seguida, sumarizarei as reservas que Quentin Skinner e Clifford Geertz apresentam à crítica de Taylor.

  5. MUTAGENICITY EVALUATION OF THE COMMERCIAL PRODUCT CI DISPERSE BLUE 291 USING DIFFERENT PROTOCOLS OF THE SALMONELLA ASSAY

    Science.gov (United States)

    Textile dyes can enter the water ecosystem through wastewater discharges potentially exposing humans through the consumption of water and food. The commercial disperse dye product C.I. Disperse Blue 291 containing the aminoazobenzene 2-[(2-bromo-4,6-dinitrophenyl)azo]-5(diethylam...

  6. Moczenie nocne i dzienne popuszczanie moczu u dzieci z zespołem rzekomej nadreaktywności wypieracza

    Directory of Open Access Journals (Sweden)

    Ryszard Makosiej

    2009-06-01

    Full Text Available Przepełniona bańka odbytnicy poprzez ucisk na pęcherz moczowy pozornie zmniejsza jego objętość, powodując występowanie moczenia nocnego oraz dziennego popuszczania moczu. Proces ten doprowadza do powstania zespołu rzekomej nadreaktywności wypieracza charakteryzującego się: moczeniem nocnym i/lub dziennym popuszczaniem moczu, zwiększeniem częstości mikcji przy współistniejącym zmniejszeniu objętości każdorazowej porcji moczu oraz przewlekłymi zaparciami. Celem pracy było określenie rodzaju zaburzeń ze strony układu moczowego u dzieci w przebiegu przewlekłego zaparcia stolca. Materiał i metody: Badaniem objęto 45 dzieci w wieku od 6 do 13 lat, w tym 20 dziewczynek i 25 chłopców, leczonych w Klinice z powodu przewlekłych zaparć współistniejących z moczeniem nocnym i dziennym popuszczaniem moczu. U wszystkich dzieci wdrożono kompleksowe postępowanie diagnostyczne dolnego odcinka przewodu pokarmowego z ultrasonograficzną (USG oceną układu moczowego. Wykonano także 3-dobowe badanie częstości i objętości każdorazowej porcji moczu, a także badanie urodynamiczne. Wyniki: W badaniach układu moczowego przeprowadzonych w analizowanych grupach dzieci nie stwierdzono zakażenia ani współistniejących wad układu moczowego. Wykonane badanie USG wykazało różnego stopnia ucisk przepełnionej bańki odbytnicy na tylną ścianę pęcherza moczowego. Zjawisko to miało ścisły związek z oddawaniem przez dzieci małych objętości porcji moczu. Badaniem urodynamicznym nie wykazano cech nadreaktywności wypieracza ani cech dyssynergii wypieraczowo-zwieraczowej. Wnioski: W analizie przyczyn zaburzeń oddawania moczu u dzieci powinno się uwzględnić przewlekłe nawykowe zaparcie stolca. W postępowanu terapeutycznym niektórych postaci moczenia nocnego i dziennego popuszczania moczu (rzekoma nadreaktywność wypieracza u dzieci należy zastosować przede wszystkim leczenie przewlekłego zaparcia.

  7. Ciência e arte: relações improváveis? Science and art: unlikely relations?

    Directory of Open Access Journals (Sweden)

    José Claudio Reis

    2006-10-01

    Full Text Available Este artigo discute as relações entre ciência e arte, principalmente entre física e pintura, com o objetivo de apresentar uma abordagem cultural para a ciência. Dessa forma, entendemos que a compreensão dos conteúdos da ciência torna-se mais significativa. Abordamos diferentes momentos da história desde a revolução científica até o século XX. As relações aqui salientadas não buscam uma relação causal entre ciência e arte, mas sim uma visão mais significativa do que é o processo de construção do conhecimento. Assim, a ciência se desnuda para nós como parte da cultura e pode nos ajudar a compreender melhor o processo histórico que nos trouxe até aqui.With the goal of presenting a cultural approach to science, the article discusses relations between science and art, especially between physics and painting. From this standpoint, we can see how understanding the substance of science becomes more important. Different moments in history are examined, from the scientific revolution down through the twentieth century. The relations highlighted herein are not chosen in an effort to undercover a causal relation between science and art but to arrive at a more meaningful understanding of how knowledge is constructed. Science is thus revealed to be part of culture, which can help us better understand the historical process through which we have come to this point.

  8. As contribuições da ciência do desenvolvimento para a psicologia da saúde The contributions of developmental science to the health psychology

    Directory of Open Access Journals (Sweden)

    Simone Cerqueira-Silva

    2011-01-01

    Full Text Available A ciência do desenvolvimento humano vem estimulando uma nova visão sobre a pesquisa em saúde, destacando variáveis contextuais e ecológicas que influenciam o processo de desenvolvimento e condicionam o diagnóstico, o tratamento e o prognóstico de indivíduos e grupos. O objetivo deste artigo é discutir as implicações da ciência do desenvolvimento humano à psicologia da saúde, área de intervenção educacional voltada aos diversos contextos de tratamento de saúde. Pretende-se, ainda, analisar criticamente alguns aspectos metodológicos dos estudos da área e apontar tendências atuais e futuras para uma análise mais funcional do processo saúde-doença. Espera-se que os profissionais de saúde se beneficiem dos argumentos e modelos propostos pela ciência do desenvolvimento humano, construindo ambientes de cuidados mais adequados às necessidades psicossociais de pacientes e familiares.The science of human development has been stimulating a new perspective on health research, highlighting contextual and ecological variables that influence the process of development and condition the diagnosis, treatment and prognosis of individuals and groups. The objective of this article is to discuss about the implications of the science of human development for health psychology, specifically for the educational area aimed toward intervention in several contexts of health treatment. Another objective of this article is to critically analyze some methodological aspects os the studies in this area and point current and future tendencies at a more functional analysis of the health-disease process. It is expected that health professionals benefit from the arguments and models proposed by the science of human development, designing environments that are more adequate to the psychological needs of patients and families.

  9. Measurement of Small Values of Hydrostatic Pressure with the Compensation of Atmospheric Pressure Influence / Pomiar Małych Wartości Ciśnienia Hydrostatycznego Z Kompensacją Wpływu Ciśnienia Atmosferycznego

    Science.gov (United States)

    Broda, Krzysztof; Filipek, Wiktor

    2013-09-01

    structure has been simplified and the measurement accuracy has increased. Znajomość rozkładu ciśnienia (lub różnicy ciśnień) determinuje opis przepływu płynu przez ośrodek porowaty. W przypadku dużych liczb Reynoldsa nie nastręcza to większych trudności, lecz dla przepływów laminarnych (tj. dla liczb Re (Bear, 1988; Duckworth, 1983; Troskolański, 1957) z zakresu 0.01 do 3) jest to praktycznie niemożliwe w oparciu o dostępne na rynku przyrządy. Przyczyny powodujące taką sytuację zostały omówione w poprzednim opracowaniu (Broda i Filipek, 2012), w którym zwrócono uwagę na trudności pomiarów związane z napięciem powierzchniowym czy włoskowatością (Adamson, 1997). Zaproponowano (Broda i Filipek, 2012) nową, autorską metodę pomiaru bardzo małych różnic ciśnień oraz skonstruowano odpowiednie stanowisko składające się z dwóch oddzielnych zbiorników pomiarowych oraz przeprowadzono pomiary. Z przeprowadzonych badań (Broda i Filipek, 2012) wynikała konieczność zastosowania stabilizacji temperatury urządzenia oraz kompensacji wpływu ciśnienia atmosferycznego na proces pomiarowy. Niniejsza publikacja przedstawia wyniki kontynuacji badań nad metodami i aparaturą do pomiaru bardzo małych różnic ciśnień z uwzględnieniem zdobytych doświadczeń, w oparciu o nowe stanowisko pomiarowe, którego zasadę działania i budowę przedstawiono na rys. 1-5, kolejno przedstawiając koncepcję wykonania pomiaru małych wartości ciśnienia hydrodynamicznego z kompensacją wpływu ciśnienia atmosferycznego rys. 1; ilustrację obrazującą stan odpowiadający przypadkowi braku przepływu płynu przez badany obiekt rys. 2; omawiając stan odpowiadający przypadkowi przepływu płynu przez badany obiekt rys. 3. Kolejno omówiono stan odpowiadający pomiarowi spadku ciśnienia na badanym obiekcie rys. 4 oraz przedstawiono metodykę pomiaru (zależności (1) - (20)). Zdjęcie stanowiska badawczego oraz jego elementów ilustruje rys. 5. W

  10. Powikłania neurologiczne współistniejące z niewydolnością nerek

    Directory of Open Access Journals (Sweden)

    Maria Łukasik

    2010-03-01

    Full Text Available Powikłania neurologiczne w przebiegu niewydolności nerek, zarówno te spowodowane mocznicą, jak i wynikające z jej leczenia, dotyczą ośrodkowego oraz obwodowego układu nerwowego, jak również tkanki mięśniowej i stanowią przyczynę zwiększonej śmiertelności u chorych z niewydolnością nerek. Pacjenci z niewydolnością nerek są szczególnie narażeni na rozwój encefalopatii mocznicowej, encefalopatii nadciśnieniowej, chorób naczyniowych ośrodkowego układu nerwowego bądź zespołów otępiennych. W tej grupie chorych częściej niż w populacji ogólnej rozwijają się mono- i polineuropatie, a choroby nerek należą do częstszych przyczyn zespołu niespokojnych nóg. Pomimo ciągłego postępu terapeutycznego wciąż nie ma skutecznego leczenia wielu tych powikłań, m.in. encefalopatii mocznicowej, miażdżycy, neuropatii czy miopatii. Co więcej, wprowadzenie dializoterapii rozszerzyło spektrum komplikacji o otępienie dializacyjne, krwawienia śródczaszkowe, zespół nierównowagi dializacyjnej, encefalopatię Wernickego i osmotyczną mielinolizę. Leczenie immunosupresyjne stosowane zarówno w chorobach nerek, jak i u chorych po przeszczepie nerki przyczyniło się do rozwoju oportunistycznych infekcji i nowotworzenia w ośrodkowym układzie nerwowym, ponadto niekiedy powikłane jest rozwojem odwracalnej tylnej leukoencefalopatii. Znajomość tych powikłań oraz ścisła współpraca między nefrologami i neurologami mogą przyczynić się do zmniejszenia śmiertelności i poprawy jakości życia chorych z niewydolnością nerek. Należy przy tym pamiętać, że także patologie, które prowadzą do niewydolności nerek (szczególnie choroby układowe tkanki łącznej czy cukrzyca, powodują uszkodzenia ośrodkowego i obwodowego układu nerwowego, a określenie rzeczywistej przyczyny bywa niemożliwe.

  11. Electrochemical study of Tm (III) ions on W and oxo acidity reactions in the LiCI-KCI eutectic; Estudio electroquimico de disoluciones de Tm (III) sobre W y reacciones de oxoacidez en el eutectico LiCI.-KCl

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez Requejo, P.

    2010-07-01

    Study of the electrochemical behaviour of Tm (III) dissolutions in the LiCI-KCI eutectic mixture using inert electrodes (W) and reagent electrodes (Al). On W, TM (III) ions are reduced in two consecutives stages sufficiently separated. The TM electro-reduction on Al makes room for the formation of intermetallic compounds so the use of an Ai electrode is appropriate to decontamination operations.

  12. A "crítica forte" da ciência e implicações para a educação em ciências The "strong criticism" of science and the implication to science education

    Directory of Open Access Journals (Sweden)

    Ileana María Greca

    2004-12-01

    Full Text Available Neste trabalho discutimos alguns elementos oriundos tanto do que se pode denominar vagamente de tendências pós-modernas na filosofia, quanto do campo da história social e da sociologia das ciências, e as possíveis implicações dos mesmos para a pesquisa e a educação em ciências. Nossa avaliação é que, independentemente do problemático de alguns de seus pressupostos, estas correntes têm a contribuir para a nossa compreensão da ciência e para a formação de cidadãos mais responsáveis.In this article we discuss some issues from what can be termed vaguely postmodernists tendencies in philosophy and social history, trying to establish some implications from these positions for Science Education. Although problematic aspects exist in their assumptions, we think they may contribute to our understanding of science and help us to prepare more responsible citizens.

  13.  Syntetyczne instrumenty finansowe i przykłady ich ujęcia w kontekście stosowania kosztu historycznego i wartości godziwej

    Directory of Open Access Journals (Sweden)

    Paweł Bielawski

    2010-11-01

    Full Text Available Celem niniejszego artykułu jest zaprezentowanie koncepcji konstruowania instrumentów syntetycznych na podstawie parytetu opcji kupna i opcji sprzedaży oraz modelu kosztów posiadania. Koncepcje te zostały wykorzystane do skonstruowania strategii long strangle i long straddle na rzeczywistych i syntetycznych instrumentach. Do wyceny bilansowej strategii zastosowano model mieszany wyceny, oparty na dwóch podstawowych miarach wartości instrumentów finansowych: zasadzie kosztu historycznego i kategorii wartości godziwej.

  14. A imagem da ciência: folheando um livro didático The image of science: leafing through a textbook

    Directory of Open Access Journals (Sweden)

    Elizabeth Macedo

    2004-04-01

    Full Text Available O texto analisa livros didáticos de ciências, centrando-se nas imagens apresentadas nesses dispositivos escolares. Num primeiro momento, apresenta indícios que permitem fazer uma leitura das tradições hegemônicas nos currículos, tendo como contraponto outros sistemas referenciais. Com base em teóricos pós-coloniais, procura mostrar como as imagens corporificam estratégias de omissão e marginalização culturais. Num segundo momento, analisa os modos de endereçamento presentes nos livros: os modelos de ciência e de prática pedagógica apresentados.This text analyzes Science textbooks focusing on the images they present. Using other systems of interpretation as a counterpoint, it begins by stressing the evidence of the hegemonic traditions in school curricula they contain. Based on post-colonial authors, it tries to show how these images embody strategies of cultural omission and marginalization. Finally, it explores the modes of addressing inscribed in such books and the models of Science and pedagogical practice they convey.

  15. A influência da Naturphilosophie nas ciências do século XIX: eletromagnetismo e energia

    Directory of Open Access Journals (Sweden)

    Ana Paula Bispo Silva

    Full Text Available Resumo Os fenômenos envolvendo eletromagnetismo e conservação da energia durante o século XIX não se enquadravam no paradigma newtoniano vigente. Havia entre os estudiosos a necessidade de explicar tais fatos considerando-se "algo mais", não expresso até então. É nessa explicação que a Naturphilosophie, programa filosófico associado ao movimento romântico alemão do século XIX, parece oferecer novos caminhos para entender as ciências. Neste artigo, trazemos os principais aspectos da obra de Schelling, principal expoente da Naturphilosophie, e como seus pressupostos foram inseridos nas ciências físicas para explicar o eletromagnetismo e a conservação da energia.

  16. A área de ciências nas avaliações internacionais de larga escala

    Directory of Open Access Journals (Sweden)

    Lenice Medeiros

    2017-08-01

    Full Text Available O artigo procura abordar os aspectos pedagógicos das avaliações internacionais que contam com a área de Ciências, focalizando especialmente a última edição do Programa Internacional de Avaliação de Estudantes (PISA e o Terceiro Estudo Regional Comparativo e Explicativo (TERCE. São apresentados e discutidos os alicerces conceituais e procedimentais desses estudos e alguns resultados relativos ao desempenho dos estudantes brasileiros. Nesse sentido, problematizam-se os limites e as possibilidades de uso desses dados para a formulação de políticas educacionais que impactam o ensino de Ciências, tais como a Base Nacional Curricular Comum (BNCC e as avaliações previstas no Plano Nacional da Educação (PNE.

  17. Programa Rede de Residências: Experimentação Arte, Ciência e Tecnologia

    Directory of Open Access Journals (Sweden)

    Ana Noronha

    2015-12-01

    Full Text Available O programa Rede de Residências: Experimentação Arte, Ciência e Tecnologia, que funcionou de 2007 a 2010, resultou de uma parceria entre a Ciência Viva e a Direção-Geral das Artes/Instituto das Artes desenvolvida para criar uma plataforma de trabalho e investigação reunindo artistas e cientistas. Para isto, definiu-se uma rede de instituições científicas de acolhimento, onde 18 artistas desenvolveram projetos de caráter experimental e transdisciplinar com ferramentas e processos específicos dos laboratórios de investigação científica. Esta nota descreve sumariamente as duas edições do programa e dá conta das principais conclusões da sua avaliação.

  18. Przestrzenne zróżnicowania kalendarza płodności we współczesnej Polsce

    OpenAIRE

    Szukalski, Piotr

    2014-01-01

    W każdym kraju występują regionalne różnice zachowań demograficznych, w tym i prokreacyjnych. Celem niniejszego artykułu jest wskazanie na podstawie analizy zmian rozkładów cząstkowych współczynników płodności w latach 1991-2012, czy w polskich realiach występuje stałość kalendarza płodności w poszczególnych województwach. Przeprowadzona analiza wskazuje, iż sytuacja taka występuje, przy czym można wyodrębnić 2 w miarę jednorodne grupy, obejmujące łącznie większość województw. W Polsce Północ...

  19. Bioética-sociobiologia: Neologismos oportunos? interface da tecnociência com as ciências humanas e sociais

    Directory of Open Access Journals (Sweden)

    William Saad Hossne

    2013-06-01

    Full Text Available O artigo focaliza a criação dos neologismos Bioética e Sociobiologia, analisando esses vocábulos que, pela sua composição, evocam relações entre ciências biológicas e ciências humanas (ética e sociologia. Destaca que esses dois neologismos já nasceram com profundos significados, mas em sentidos diferentes. Ressalta a importância da bioética na integração das culturas científica e humanística, para além das disposições estatutárias universitárias. Conclui indicando que a Bioética traz uma mensagem sugestiva de como criar mecanismos e condições para enfrentar os desafios que os avanços científicos, inexoráveis, nos lançam.

  20. Przydatność żywności ekologicznej w żywieniu ludzi w wieku starszym

    OpenAIRE

    Szołtysek, Katarzyna; Dziuba, Szymon

    2007-01-01

    Struktura demograficzna Polski jest charakterystyczna dla krajów, w których stwierdza się zmiany wynikającej ze starzenia się społeczeństwa; ludność w przeważającej większości znajduje się w wieku produkcyjnym bądź poprodukcyjnym [2]. W 2001 r. w na zym kraju byłobli ko 5,6 mln osób w wieku poprodukcyjnym, co stanowi 14,2% ogółu ludności kraju. Mężczyzn powyżej 60 roku życia było 1,8 mln, a kobiet 3,8 mln. W wieku poprodukcyjnym na l 00 mężczyzn przypada 216 kobiet. Zgodnie z p...

  1. Construindo pontes entre ciência, política e práticas em saúde coletiva

    OpenAIRE

    Bosi, Maria Lúcia Magalhães; Gastaldo, Denise

    2011-01-01

    O artigo analisa elementos nucleares no debate nacional e internacional acerca da necessária integração entre ciência, política e práticas em Saúde Coletiva e apresenta subsídios para essa integração. São assinalados alguns obstáculos situados tanto no plano conceitual como aqueles presentes nas relações que se processam em outras esferas e se interpõem à pretendida integração. Dentre os elementos assinalados, evidencia-se que ciência, política e o âmbito das práticas no setor não são campos ...

  2. A origem do universo como tema para discutir a Natureza da Ciência no Ensino Médio

    Directory of Open Access Journals (Sweden)

    Gustavo Antonio Montenegro Guttmann

    2015-05-01

    Full Text Available http://dx.doi.org/10.5007/2175-7941.2015v32n2p442 Nesse artigo, será apresentada uma proposta de introdução de questões relativas à Natureza da Ciência a partir da confrontação de duas teorias distintas sobre a origem do universo. Esse trabalho foi desenvolvido junto a turmas de Ensino Médio de uma escola do Rio de Janeiro. As teorias são divergentes, sendo uma defensora de um universo com uma origem definida, o Big Bang, e a outra de um Universo Eterno. Ao final do trabalho, foi possível aferir que os alunos passaram a ter uma visão mais complexa sobre Ciência.

  3. Sobre ciúmes e erotomania: reflexões acerca de um caso clínico

    Directory of Open Access Journals (Sweden)

    Fernanda Costa Rios

    2013-09-01

    Full Text Available Este artigo aborda os temas do ciúmes e da erotomania a partir de um caso clínico. O ciúme foi retomado partindo de sua manifestação primordial na gênese da constituição do psiquismo em direção a seus desdobramentos patológicos. A erotomania foi abordada a partir do referencial psiquiátrico clássico e não daquele encontrado nos atuais manuais diagnósticos. A articulação dos dois temas, embora não tenha visado qualquer intenção diagnóstica, apontou para uma posição subjetiva regressiva, de estruturação narcísica, delirante e com frágil conjugação do corpo.

  4. Sobre ciúmes e erotomania: reflexões acerca de um caso clínico

    OpenAIRE

    Fernanda Costa Rios

    2013-01-01

    Este artigo aborda os temas do ciúmes e da erotomania a partir de um caso clínico. O ciúme foi retomado partindo de sua manifestação primordial na gênese da constituição do psiquismo em direção a seus desdobramentos patológicos. A erotomania foi abordada a partir do referencial psiquiátrico clássico e não daquele encontrado nos atuais manuais diagnósticos. A articulação dos dois temas, embora não tenha visado qualquer intenção diagnóstica, apontou para uma posição subjetiva regressiva, de est...

  5. Experimental Investigation on Usage of Palm Oil as a Lubricant to Substitute Mineral Oil in CI Engines

    Directory of Open Access Journals (Sweden)

    K. S. V. Krishna Reddy

    2014-01-01

    Full Text Available Due to growing environmental concerns, vegetable oils are finding their way into lubricants for industrial and transportation applications. The substitution of mineral oil with vegetable oil as a base stock for an environment friendly lubricant in a CI engine is explored in this study without adding any additives. The experiments have been conducted with a mixture of palm oil and mineral oil, at different compositions. Blends of palm oil and mineral oil in different compositions, 0, 25, and 50 (by vol % were added to base SAE20W40 mineral oil to obtain different lubricant blends. The parameters evaluated include brake thermal efficiency, brake specific fuel consumption, volumetric efficiency, and mechanical efficiency and exhaust emissions. The engine performance and emission tests were carried out on a single cylinder, water cooled, 4-stroke CI engine. Compared to mineral oil, the palm oil-based lubricant revealed appreciable expedience on engine and emission performance.

  6. 40 CFR 60.4209 - What are the monitoring requirements if I am an owner or operator of a stationary CI internal...

    Science.gov (United States)

    2010-07-01

    ... I am an owner or operator of a stationary CI internal combustion engine? 60.4209 Section 60.4209... if I am an owner or operator of a stationary CI internal combustion engine? If you are an owner or... stationary CI internal combustion engine, you must install a non-resettable hour meter prior to startup of...

  7. 40 CFR 63.6604 - What fuel requirements must I meet if I own or operate an existing stationary CI RICE?

    Science.gov (United States)

    2010-07-01

    ... I own or operate an existing stationary CI RICE? 63.6604 Section 63.6604 Protection of Environment....6604 What fuel requirements must I meet if I own or operate an existing stationary CI RICE? If you own or operate an existing non-emergency CI stationary RICE with a site rating of more than 300 brake HP...

  8. Aulas de campo em ambientes naturais e aprendizagem em ciências: um estudo com alunos do ensino fundamental

    OpenAIRE

    Seniciato,Tatiana; Cavassan,Osmar

    2004-01-01

    Este trabalho discute a contribuição das aulas de Ciências desenvolvidas em fragmentos dos ecossistemas terrestres naturais brasileiros na relação entre os aspectos emocionais e seu papel na motivação dos alunos em um contexto educativo. Analisa também como a abordagem menos fragmentada e menos abstrata de determinados conhecimentos referentes à ecologia pode contribuir para o processo de aprendizagem.

  9. OCENA NOŚNOŚCI DORAŹNEJ BELEK STALOWYCH WZMOCNIONYCH NAPRĘŻONYMI TAŚMAMI CFRP

    Directory of Open Access Journals (Sweden)

    Paulina PAŚKO

    2016-07-01

    Full Text Available Dobre parametry wytrzymałościowe, niewielka gęstość, odporność na korozję jak również wysoka trwałość taśm kompozytowych CFRP stanowią o ich przewadze nad tradycyjnymi materiałami stosowanymi do wzmocnień konstrukcji stalowych. Wstępny naciąg taśm może dodatkowo zwiększyć efektywność wzmocnienia. W artykule przedstawiono wstępne badania belek stalowych wzmocnionych naprężonymi taśmami CFRP. Głównym celem badań była ocena nośności po wzmocnieniu belek taśmami. Badania przeprowadzono na belkach walcowanych o rozpiętości teoretycznej przęsła 4,80 m. Belki wzmocniono taśmami naprężonymi do  40% i 50% ich wytrzymałości na rozciąganie. W wyniku wzmocnienia uzyskano odpowiednio 9% i 10% wzrost nośności granicznej oraz 11% i 14% redukcję ugięć sprężystych. Wykazano, że zwiększenie poziomu wstępnych naprężeń w taśmie miało niewielki wpływ na nośność doraźną belek stalowych.

  10. Homossexualidade, bissexualidade e HIV/AIDS no Brasil: uma bibliografia anotada das ciências sociais e afins

    OpenAIRE

    Guimarães,Carmen Dora; Terto Jr,Veriano; Parker,Richard G.

    1992-01-01

    Esta bibliografia anotada focaliza a produção das Ciências Sociais e áreas afins relativa à homossexualidade, bissexualidade e HIV/AIDS no Brasil. Engloba mais de cem publicações e documentos, e busca examinar as maneiras pelas quais essa literatura poderá contribuir para a compreensão e respostas mais efetiva à epidemia da AIDS na sociedade brasileira.

  11. Determinants Of European Banks' Capital Adequacy / Determinanty Adekwatności Kapitałowej Banków Europejskich

    Directory of Open Access Journals (Sweden)

    Klepczarek Emilia

    2015-12-01

    Full Text Available W artykule przedstawiono analizę czynników wpływających na poziom wskaźnika CET 1 ratio, będącego miarą relacji pomiędzy kapitałem podstawowym banku a aktywami ważonymi ryzykiem. Badaniu poddano próbę losowo wybraną z grupy banków uczestniczących w tzw. stress-testach przeprowadzonych przez władze Europejskiego Banku Centralnego. EBC przeprowadził testy warunków skrajnych oceniając m.in. poziom współczynnika CET1 obliczanego według regulacji wynikających z III Reżimu Bazylejskiego. Wyniki potwierdzają hipotezę o wpływie wielkości banku i wskaźników ryzyka (aktywa ważone ryzykiem do aktywów ogółem; udział pożyczek w aktywach ogółem na poziom adekwatności kapitałowej. Potwierdzono również silny wpływ konkurencji, a także ujemną korelację między wskaźnikiem CET1 i udziałem depozytów w zobowiązaniach kapitałowych, którą można uzasadnić istnieniem systemu gwarantowania depozytów. W końcowej części artykułu przedstawiono możliwe słabości przeprowadzonych badań, wynikające z nich ograniczenia wnioskowania oraz koncepcje ewentualnych dalszych analiz przedmiotowego obszaru tematycznego.

  12. Experimental Investigation on Usage of Palm Oil as a Lubricant to Substitute Mineral Oil in CI Engines

    OpenAIRE

    K. S. V. Krishna Reddy; Naval Kabra; Umesh Kunchum; T. Vijayakumar

    2014-01-01

    Due to growing environmental concerns, vegetable oils are finding their way into lubricants for industrial and transportation applications. The substitution of mineral oil with vegetable oil as a base stock for an environment friendly lubricant in a CI engine is explored in this study without adding any additives. The experiments have been conducted with a mixture of palm oil and mineral oil, at different compositions. Blends of palm oil and mineral oil in different compositions, 0, 25, and 5...

  13. Artigos da revista Ciência Hoje como recurso didático no ensino de química

    Directory of Open Access Journals (Sweden)

    Luciana Nobre de Abreu Ferreira

    2011-01-01

    Full Text Available This paper presents the results from the selection and analysis of Ciência Hoje articles published from 2004 to 2009 with the aim to discuss some of their features which can assist teachers in chemistry teaching. Therefore, the articles were analyzed according to their content and format based on an analytical tool proposed by Kawamura and colleagues. The results indicate that this magazine offers a reasonable collection of articles related to chemistry with a variety of contents and approaches.

  14. Metáforas da nova ciência para educar em tempos de pós-humanidade

    Directory of Open Access Journals (Sweden)

    Ivan Amaral Guerrini

    2009-01-01

    Full Text Available http://dx.doi.org/10.5007/1807-1384.2008v5n2p73 Este ensaio fala inicialmente das grandes rupturas que aconteceram na ciência durante o século XX, trazendo profundas alterações nos embasamentos filosóficos e epistemológicos que reinavam imponentes desde o século XVII. Em seguida, salienta que os princípios da Física Quântica, da Teoria do Caos, do Pensamento Sistêmico e da abordagem transdisciplinar, emergentes no século passado, não foram adequadamente assimilados por profissionais da ciência, principalmente por aqueles que se utilizam da chamada tecno-ciência que busca apenas os resultados práticos dos avanços científicos e também por aqueles que somente pensam na publicação de seus dados experimentais para seus pares da academia. Como fica, então, o desafio atual de se ensinar os novos princípios da ciência com conhecimento e paixão que motive e desperte os alunos, de uma geração wiki, para um reencantamento na busca da compreensão da natureza agora de forma transdisciplinar? Como deveria ser o educador atualizado em nossos tempos? O ensaio traz algumas metáforas para essa análise e procura fomentar o debate dentro e fora da academia com o objetivo de iluminar a caminhada do professor e cientista na era wiki do pós-humano.

  15. Trudności diagnostyczne i terapeutyczne w przypadku ziarniniaka grzybiastego rozpoznanego wstępnie jako actinic reticuloid

    Directory of Open Access Journals (Sweden)

    Małgorzata Sokołowska-Wojdyło

    2010-07-01

    Full Text Available Wprowadzenie: Ziarniniak grzybiasty (mycosis fungoides – MF to chłoniako niskiej złośliwości, wywodzący się z obwodowych komórek T,pierwotnie zajmujący skórę. Cel pracy: Przedstawienie trudności diagnostycznych i terapeutycznychw MF. Opis przypadku: Przedstawiono przypadek dotyczący 72-letniejpacjentki z MF, objętej opieką przez Klinikę od października 2007 dowrześnia 2009 roku. Zmiany skórne miały cechy melanoerytrodermii,a obraz histopatologiczny wycinków ze zmian nie upoważniał do rozpoznaniarozrostu złośliwego. Początkowo rozpoznawano osutkępolekową oraz actinic reticuloid. Rozpoznanie MF ustalono dopiero po19 miesiącach obserwacji. Na skórze chorej wystąpiły zmiany rumieniowo-naciekowe, które w badaniu histopatologicznym miały cechyMF. Dwa miesiące później chora zmarła, mimo leczenia cytostatycznegoi naświetlań szybkimi elektronami. Wnioski: Przedstawiony przypadek potwierdza trudności diagnostycznewynikające z podobieństwa wczesnych okresów chłoniaka dodermatoz o podłożu zapalnym. Wyjątkowo niepomyślny przebieg choroby– pacjentka zmarła po 2 latach od momentu ustalenia rozpoznania– uzmysławia także ograniczenia możliwości terapeutycznych,szczególnie w zaawansowanych stadiach MF.

  16. Ciência(s e Pesquisa no Contexto Escolar: Concepções e Limitações

    Directory of Open Access Journals (Sweden)

    Diógenes Gewehr

    2017-12-01

    Full Text Available Este artigo problematiza a visão de ciência e pesquisa de alunos e professores da Educação Básica. Buscou-se compreender como tem sido realizada a pesquisa no contexto escolar, partindo do pressuposto de que, para alunos e professores, este processo parece não estar claro, limitando as possibilidades pedagógicas de ensino e aprendizagem. Também, a definição do que é ciência pode estar sendo concebida de maneira equivocada e restrita, produzindo uma distorção da realidade. Nesta pesquisa, empírica e qualitativa, aplicou-se um questionário semiestruturado com 18 professores e 31 alunos dos Anos Finais do Ensino Fundamental. Os dados foram categorizados e interpretados mediante Análise de Conteúdo. Observou-se que muitos alunos e professores não têm compreensão clara do que seja ciência, confundindo-a com a disciplina Ciências. Quanto a prática da pesquisa, constatou-se que ocorre de modo incipiente: alunos relatam que é realizada principalmente por meio de exercícios em aula; professores, em sua maioria, não se consideram pesquisadores. Percebeu-se um modo de pesquisar baseado em cópias de conteúdos, com poucos (ou nenhum elementos que favoreçam a emancipação dos alunos.

  17. Adsorption of CI Basic Blue 3 Dye Molecules from Aqueous Media by Sulfuric Acid-Activated Montmorillonite Mineral

    OpenAIRE

    TAŞAR, Şeyda; KAYA, Fatih; ÖZER, Ahmet

    2017-01-01

    Many industries (especially textile, paper, plastic) which use chemicals and colorants, generate considerable amount of waste water since they use excessive amounts of water in their operations. and they These waste waters form a significant reason of worldwide water pollution, and if they are released before being treated, they bring an important harm to these waters.  Therefore, In this paper, adsorption kinetics and equilibrium of CI Basic Blue 3 (BB3) from aqueous media using sul...

  18. Mapping of Nearby Galaxies in [CI] 370 μm and CO (7→6) 371 μm

    Science.gov (United States)

    Nikola, Thomas; Stacey, G. J.; Bradford, C. M.; Bolatto, A. D.; Higdon, S. J.; Isaak, K.; Israel, F.

    The fine structure line of [CI] at 370 μm, and the CO (7→6) rotational line at 371 μm are important coolants which can be used to probe the temperature and density of the warm gas component in regions of enhanced star formation. These lines can be used to provide key constrains on the physical properties of the warm molecular gas component and to deduce the excitation mechanism that heats the molecular gas. We have used the Cornell submillimeter spectrometer, SPIFI, on the JCMT to map the [CI] and CO (7→6) line emission from the nuclear regions of the nearby galaxies NGC 253 and M82, and from the overlap region of NGC4038/9. In both NGC 253 and NGC 4038/9 the [CI] emission appears fairly constant, while the CO (7→6) emission peaks at the nucleus and the most active star-forming region, respectively. The observations of NGC 253 suggest that the majority of the nuclear molecular gas is most likely heated by cosmic rays. The spatial distribution of the line emission in the overlap region of NGC 4038/9 is suggestive of a PDR, with a decrease in density from the most active region to the outside. In contrast, in M82 both the CO (7→6) and [CI] line intensities vary over the mapped region, with the line ratios remaining fairly constant. This suggests a change in the beam filling factor of PDRs with a higher PDR number density in the most active regions.

  19. AHRQ series on complex intervention systematic reviews-paper 6: PRISMA-CI extension statement and checklist.

    Science.gov (United States)

    Guise, Jeanne-Marie; Butler, Mary E; Chang, Christine; Viswanathan, Meera; Pigott, Terri; Tugwell, Peter

    2017-10-01

    Complex interventions are widely used in health systems, public health, education, and communities and are increasingly the subject of systematic reviews. Oversimplification and inconsistencies in reporting about complex interventions can limit the usability of review findings. Although guidance exists to ensure that reports of individual studies and systematic reviews adhere to accepted scientific standards, their design-specific focus leaves important reporting gaps relative to complex interventions in health care. This paper provides a stand-alone extension to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting tool for complex interventions-PRISMA-CI-to help authors, publishers, and readers understand and apply to systematic reviews of complex interventions. PRISMA-CI development followed the Enhancing the QUAlity and Transparency Of health Research Network guidance for extensions and focused on adding or modifying only essential items that are truly unique to complex interventions and are not covered by broader interpretation of current PRISMA guidance. PRISMA-CI provides an important structure and guidance for systematic reviews and meta-analyses for the highly prevalent and dynamic field of complex interventions. Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.

  20. PEMBELAJARAN BAHASA ARAB BERBASIS MEDIA SURAH MUTAHARRIKAH MULAWWANAH PADA KELAS CI+BI di MTs NEGERI SUMBER BUNGUR PAMEKASAN

    Directory of Open Access Journals (Sweden)

    Achmad Muchlis

    2011-07-01

    Full Text Available Arab Ianguage does not only come from words released by utterance ( vokal but also uses Ianguage, signal or picture Ianguage. Language Arab study is expected to assist educative participants recognize x'self, his cultural, and others culture, media surah mutaharrikah mulawwanah represents one of the alternative media in efficacy of Arab Ianguage study. Teacher will feel to be assisted in arranging its study process. Media availibility,specially surah mutaharrikah mulawwanah in a class will influence the student study where location of appropriate media will support attainment process of the arab language study itself . Through research by using approach qualitative, with exploration technique or analysis descriptive with cases manner, about Arab Ianguage study bases on media surah mutaharrikah mulawwanah at CI+BI class specially in MTS Negeri Sumber Bungur Pamekasan to strengthen finding about study theory of more quality. Research result obtained show; a that CI+BI class MTS Negeri Sumber Bungur Pamekasan does the steps of unique study, among its unique is to defining mufrodat and qowaid before entering at istima', kalam, qiro’ah and kitabah items, b motivation, student talent and enthusiasm in Arab Ianguage study in CI+BI class MTS Negeri Sumber Bungur Pamekasan can expand and show the improvement which enough significance if it is supported by teacher and study media matching with educative participant characteristic.

  1. Evaluation of radioiodine therapy with fixed doses of 10 and 15 mCi in patients with Graves disease

    International Nuclear Information System (INIS)

    Canadas, Viviane; Vilar, Lucio; Moura, Eliane; Brito, Ana; Castellar, Enio

    2007-01-01

    The treatment options for the hyperthyroidism of Graves' disease are antithyroid drugs, surgery and radioiodine, none of which is considered ideal, as they do not act directly on the etiopathogenesis of the disease. Radioiodine has been increasingly used as the treatment of choice because it is a safe and definitive therapy whose administration is very easy. Some authors prefer to administer higher doses in order to deliberately induce hypothyroidism, while others recommend lower doses that result in a lower incidence of hypothyroidism and a greater incidence of euthyroidism. There is no consensus for the optimal regimen of fixed doses to be used and this is the main focus of the present study, where doses of 10 and 15 mCi of 131 I were compared. Among the 164 patients analyzed, 61 (37.2%) were submitted to 10 mCi and 103 (62.8%) to 15 mCi. In the longitudinal analysis it was observed that remission of the hyperthyroidism was statistically different in the sixth month (p 131 I brought about a similar remission of the hyperthyroidism after 12 months of treatment. Moreover, the remission rate of the hyperthyroidism had no association with age, sex or previous therapy with antithyroid drugs. (author)

  2. A netnografia como método de pesquisa em Ciência da Informação

    Directory of Open Access Journals (Sweden)

    Maurício de Vargas Corrêa

    2017-05-01

    Full Text Available http://dx.doi.org/10.5007/1518-2924.2017v22n49p1 Discute a aplicação da netnografia como método de pesquisa no campo da Ciência da Informação. Descreve o método netnográfico, suas origens, os primeiros estudos desenvolvidos no Brasil, algumas características e diferenças em relação à etnografia tradicional, os possíveis campos de estudo e as principais etapas metodológicas. Analisa quatro trabalhos publicados em periódicos científicos nacionais da área da Ciência da Informação e um trabalho publicado em anais de evento que indicam o uso da netnografia como método de pesquisa. Compara os procedimentos metodológicos realizados pelos autores com as recomendações propostas por Kozinets (2010, 2014 em estudos teóricos recentes sobre o método netnográfico. Finalizando, apresenta sugestões que podem auxiliar os pesquisadores na definição do campo de estudo, no tratamento dos dados netnográficos e na seleção de temas de pesquisa relevantes na área da Ciência da Informação.

  3. Reflexões e discursos sobre a vida humana: novos subsídios para aulas de ciências

    Directory of Open Access Journals (Sweden)

    Fernanda Veneu-Lumb

    2012-01-01

    Full Text Available Objetivou-se, aqui, analisar os discursos científico e religioso, de professores de ciências do Ensino Médio, e de representantes do senso comum (perfis variados, maiores de 18 anos, que não estão envolvidos diretamente na discussão sobre o tema, e não pertencem aos demais grupos estudados, sobre a definição de vida humana. Nesta pesquisa, com abordagem qualitativa, utilizaram-se entrevistas semiestruturadas para a coleta de dados. Os dados foram analisados sob vários olhares teóricos. As "falas" dos sujeitos foram registradas e analisadas por meio de interpretação simples, buscando-se identificar os significados mais importantes. Ao se conjugarem múltiplos discursos, pretendeu-se gerar subsídios a serem utilizados em ambientes de educação formal e não formal em biociências e saúde. Ao se sistematizarem discursos que ordinariamente não são vistos juntos, e este é o ineditismo da pesquisa, buscou-se fornecer informações abrangentes para uso em aulas de ciências sobre vida humana, e, dessa forma, contribuir, significativamente, para o processo ensino-aprendizagem de ciências.

  4. Quantum entanglement of helium-like systems with varying-Z: compact state-of-the-art CI wave functions

    Science.gov (United States)

    López-Rosa, S.; Esquivel, R. O.; Plastino, A. R.; Dehesa, J. S.

    2015-09-01

    In this work we have performed state-of-the-art configuration-interaction (CI) calculations to determine the linear and von Neumann entanglement entropies for the helium-like systems with varying nuclear charge Z in the range 1≤slant Z≤slant 10. The focus of the work resides on determining accurate entanglement values for 2-electron systems with the lowest computational cost through compact CI-wave functions. Our entanglement results for the helium atom fully agree with the results obtained with higher quality wave functions of the Kinoshita type (Dehesa [5]). We find that the correlation energy is linearly related to the entanglement measures associated with the linear and von Neumann entropies of the single-particle reduced density matrizes, which sheds new light on the physical implications of entanglement in helium-like systems. Moreover, we report CI-wave-function-based benchmark results for the entanglement values for all members of the helium isoelectronic series with an accuracy similar to that of Kinoshita-type wave functions. Finally, we give parametric expressions of the linear and von Neumann entanglement measures for two-electron systems as Z varies from 1 to 10.

  5. The selected aspects of transport services punctuality measurement rated by the carrier and passengers / Wybrane aspekty pomiaru punktualności przewozów przez przewoźnika i pasażerów

    Directory of Open Access Journals (Sweden)

    Bojda Krzysztof

    2016-10-01

    Full Text Available Jakość funkcjonowania transportu publicznego odgrywa coraz większą rolę w całościowej ocenie jakości życia w dużych aglomeracjach miejskich. Punktualność odjazdów klasyfikowana jest jako jedno z podstawowych kryteriów dla pasażerów, organizatora transportu publicznego oraz przewoźnika. W artykule przedstawiono problematykę pomiaru punktualności przewozów w kontekście oceny przez różnych uczestników procesu transportowego. Omówiono przegląd literatury ze wskazaniem najczęściej stosowanych miar oceny punktualności oraz powiązaniem z niezawodnością czasu podróży. Przedstawiono narzędzie analityczne opracowane dla potrzeb przewoźnika, umożliwiające wykonanie szczegółowych analiz na podstawie danych zarejestrowanych podczas realizacji kursów. Zreferowano model wspomagania informacyjnego procesu użytkowania systemu transportowego, w którym dostępne archiwalne dane o realizacji rozkładu jazdy wykorzystywane są do przedstawienia propozycji zoptymalizowanych tras przejazdu w odpowiedzi na zapytanie użytkownika. Podkreślono zasadność analizy niezawodności dokonywania przesiadki podczas podróży.

  6. Edukacja żywieniowa rodziny w przypadku występowania otyłości

    Directory of Open Access Journals (Sweden)

    Magdalena Pieszko

    2013-12-01

    Full Text Available Edukacja żywieniowa stanowi ważny element terapii osób z nadwagą i otyłością, będąc niejednokrotnie dopełnie‑ niem dla diety redukcyjnej czy farmakoterapii. Prawidłowo dobrana i realizowana metoda szkolenia powinna speł‑ niać funkcję czynnika mobilizującego i wzmacniającego, dzięki któremu pacjent będzie chętniej modyfikował swój styl życia. Głównym celem edukacji dotyczącej diety jest przekazanie i utrwalenie właściwych postaw żywieniowych, przy czym forma przekazu wiedzy na temat odżywiania skierowana do dzieci nie może być taka sama jak przezna‑ czona dla ich rodziców/opiekunów. Związane jest to z różnicami w rozumieniu i przyswajaniu informacji pomiędzy osobami dorosłymi i dziećmi. Mimo to trzeba pamiętać, że rodzina jest społecznością, której członkowie są ze sobą bardzo związani i mają na siebie duży wpływ – nie można zatem pominąć edukacji, która będzie zachęcała całą rodzinę do wspólnych działań. Zmiana nawyków żywieniowych musi dotyczyć wszystkich członków rodziny, gdyż to rodzice poprzez swoje poglądy, preferencje i zachowania kształtują poglądy, preferencje i zachowania dzieci. Również osoba szczupła powinna dostosować się do nowych zasad dla dobra swoich bliskich. Wzajemna moty‑ wacja może być kluczem do sukcesu. Zmiana stylu życia wiąże się też ze zwiększeniem aktywności fizycznej, która jest nieodzownym elementem terapii pacjentów otyłych. Wzrost aktywności ruchowej może skutecznie skrócić czas leczenia oraz przyczynić się do jego lepszych efektów.

  7. KONDENSACJA W PRZEGRODZIE ŚCIENNEJ Z KOMPOZYTU WAPIENNO-KONOPNEGO – OCENA MOŻLIWOŚCI WYSTĄPIENIA

    Directory of Open Access Journals (Sweden)

    Przemysław BRZYSKI

    Full Text Available Obecność składników organicznych w materiałach budowlanych, decyduje o ich wrażliwości na wilgoć, a dłuższej perspektywie na ich korozję biologiczną, jeśli nie zostaną odpowiednio zabezpieczone przed czynnikami atmosferycznymi. Przegrody powinno się projektować zwracając uwagę na ryzyko wystąpienia powierzchniowej oraz międzywarstwowej kondensacji pary wodnej. W artykule przedstawiono analizę przegrody ściennej, wykonanej z kompozytu wapienno-konopnego. Założono grubość ściany 40 cm oraz po 2 cm tynku po obu stronach. Kompozyt składa się z modyfikowanego spoiwa wapiennego oraz paździerzy konopnych pozyskanych z konopi przemysłowych. Parametry materiału, potrzebne do analizy (współczynnik przewodności cieplnej oraz paroprzepuszczalność wyznaczono doświadczalnie w badaniach własnych. W części analitycznej artykułu przedstawiono obliczenia temperatury powierzchni koniecznej do uniknięcia krytycznej wilgotności powierzchni wewnętrznej ściany oraz określono możliwość wystąpienia kondensacji międzywarstwowej w analizowanej ścianie. Obliczenia wykonano zgodnie z normą PN-EN 13788. Przyjęto warunki brzegowe dla lokalizacji Lublin. Miesiącem krytycznym, w którym przegroda jest najbardziej narażona na kondensację jest styczeń. Z uwagi na dobre parametry termoizolacyjne przegrody, jej budowę ryzyko rozwoju pleśni na wewnętrznej powierzchni ściany nie występuje. Kondensacja wewnętrzna występuje w przegrodzie w okresie grudzień – luty. Natomiast już w marcu zgromadzony kondensat ulega całkowitemu odparowaniu. Przegroda odpowiedniej grubości, wykonana z kompozytu wapienno-konopnego, z uwagi na swoją wysoką paroprzepuszczalność oraz niskie przewodnictwo cieplne nie jest narażona na długotrwałe i niszczące oddziaływanie skraplającej się wewnątrz pary wodnej.

  8. Potrzeby i możliwości rehabilitacji chorych na stwardnienie rozsiane w Polsce

    Directory of Open Access Journals (Sweden)

    Andrzej Potemkowski

    2015-08-01

    Full Text Available Specyfika stwardnienia rozsianego sprawia, że rehabilitacja pacjentów cierpiących na tę chorobę jest jednym z najtrudniejszych zadań rehabilitacji neurologicznej. Liczne objawy stwardnienia rozsianego znacznie obniżają jakość życia około 40 000 chorych żyjących w Polsce. Choć rehabilitacja nie zmniejsza istotnie częstości rzutów ani nie zatrzymuje progresji choroby, to – jeśli jest odpowiednio, nowocześnie prowadzona – poprawia nie tylko obiektywne wskaźniki, lecz także subiektywne samopoczucie i samoocenę, a w rezultacie daje możliwość wytworzenia pozytywnego obrazu siebie. Potrzeby polskich chorych są duże, ale dostępność rehabilitacji (zarówno ambulatoryjnej, jak i  stacjonarnej jest wysoce niesatysfakcjonująca. W związku z tym powinno się optymalizować jakość rehabilitacji prowadzonej przez chorych samodzielnie, w warunkach domowych. Duże znaczenie mają zatem wiedza pacjenta na temat wpływu rehabilitacji na chorobę i możliwych form leczniczych, jak również świadomość skutków zaniechania tej formy leczenia. Stwardnienie rozsiane, niezależnie od postaci, prowadzi do niepełnosprawności i obniżenia jakości życia, a to ogranicza samodzielność, niesie ze sobą ryzyko utraty pracy, utrudnia samoobsługę i swobodę w zakresie aktywności dnia codziennego. Istotna staje się rola rehabilitacyjnych zespołów terapeutycznych (specjaliści neurologii i rehabilitacji plus fizjoterapeuta, które powinny istnieć w każdej poradni diagnostyki i leczenia stwardnienia rozsianego. Ustalenie przez taki zespół ubytków funkcji oraz określenie celów i planu postępowania pozwoliłyby na zmniejszanie skutków postępu choroby.

  9. Near-infrared chemical imaging (NIR-CI) as a process monitoring solution for a production line of roll compaction and tableting

    DEFF Research Database (Denmark)

    Khorasani, Milad Rouhi; Amigo Rubio, Jose Manuel; Sun, Changquan Calvin

    2015-01-01

    compound for both roller compacted ribbons and corresponding tablets. In order to select the optimal process, setting the standard deviation of tablet tensile strength and tablet weight for each tablet batch was considered. Strong linear correlation between tablet tensile strength and amount of fines......In the present study the application of near-infrared chemical imaging (NIR-CI) supported by chemometric modeling as non-destructive tool for monitoring and assessing the roller compaction and tableting processes was investigated. Based on preliminary risk-assessment, discussion with experts...... and current work from the literature the critical process parameter (roll pressure and roll speed) and critical quality attributes (ribbon porosity, granule size, amount of fines, tablet tensile strength) were identified and a design space was established. Five experimental runs with different process...

  10. Descripción de la rotiferofauna presente en Ciénaga La Redonda, Ciénaga La Luna, Ciénaga Pajaral y Canal Dragado durante la época lluviosa. Complejo de Pajarales, Departamento de Magdalena, Colombia

    Directory of Open Access Journals (Sweden)

    Juan Sebastián Celis Melo

    2007-08-01

    Full Text Available La Composición y Abundancia de Rotíferos presentes durante la época lluviosa en las ciénagas de La Redonda, ciénaga La Luna, ciénaga Pajaral y Canal Dragado (Magdalena, Colombia fueron determinadas utilizando el conteo microscópico. La colecta de las muestras se llevó a cabo los días 15 septiembre, 29 septiembre, 23 octubre, 16 noviembre, 23 noviembre y 12 diciembre de 2006, mediante una botella de tipo Van Dorn. Paralelamente en cada estación se tomaron datos de las variables: salinidad, temperatura, pH y oxígeno empleando sondas multiparámetro WTW. La diversidad de rotíferos fue calculada empleando el índice de Shannon-Wienner H’ (log10 comparando entre estaciones y fechas de muestreo para establecer variaciones a lo largo del periodo de estudio, además se relacionaron gráficamente las variables fisicoquímicas con los valores de diversidad calculados empleando un valor de 0,05 y un intervalo de confianza del 95%. En total, fueron encontradas 20 especies pertenecientes a las familias Brachionidae, Lecanidae, Filiniidae, Synchaetidae, Hexarthriidae y Testudinellidae, siendo las familias Brachionidae y Lecanidae las más abundantes. La relación entre la diversidad encontrada y las variables fisicoquímicas medidas indican que la salinidad es la principal responsable de la diversidad de rotíferos durante el periodo de estudio. En conclusión, la reapertura de los canales de comunicación entre el río Magdalena y las ciénagas del Complejo de Pajarales han disminuido los valores de salinidad sugiriendo un aumentó en la diversidad de rotíferos. Palabras clalve: rotífero, laguna costera, disturbio ecosistémico, salinidad, complejo pajarales.

  11. Próba kognitywnego ujęcia mądrości (na materiale przysłów polskich i litewskich

    Directory of Open Access Journals (Sweden)

    Monika Bogdzevič

    2015-06-01

    Full Text Available The concept of wisdom in Polish and Lithuanian paremiology In this paper, an attempt has been made to present the semantic and axiological substance of wisdom hidden in the consciousnesses of two different, namely Polish and Lithuanian, linguistic-cultural communities. The analysis belongs to a branch of linguistics, interpreting language in terms of concepts, viewing it as a source of knowledge about people themselves, different communities, their mentality, ways of perception and interpretations of the way the world is. As a model to present the most thorough understanding of wisdom, the method of cognitive definition proposed by Jerzy Bartmiński is applied. Linguistic-cultural images of wise [person], understood as the concretizations of wisdom have to reveal him/her in opposition to stupid. The cognitive picture of wise is for the most part based on the analysis of features of character and appearance, portrayed behavior, interpersonal relations and the way others have as a perception of wise. Many cognitive parameters of wisdom are revealed while exploring the interactions between people and that of nature (plants, animals which surrounds them and investigating deeper interpersonal relations with other people. The material for research was taken from Polish and Lithuanian proverbs. The latter occur as a result of world perception, everyday life observation, confrontations with its phenomenon. The proverbs are taken from compendiums of Polish and Lithuanian proverbs: Nowa księga przysłów i wyrażeń przysłowiowych (The New Book of Proverbs and Proverbial Phrases by Julian Krzyżanowski and Lietuvių patarlės (Lithuanian Proverbs, Patarlių paralelės (Parallels of Proverbs by Kazys Grigas. Given as cognitive definitions the cultural visions of wise, despite all the emphasized differences, enable us to perceive many evaluations of wise similar or even common to Polish and Lithuanian cultures.   Próba kognitywnego ujęcia mądrości

  12. Variabilidade biológica de isolados do Citrus leprosis virus (CiLV oriundos de cultivares de laranjeira Biological variability of Citrus leprosis virus (CiLV isolates from sweet orange cultivars

    Directory of Open Access Journals (Sweden)

    Jadier de Oliveira Cunha Junior

    2007-09-01

    Full Text Available A leprose, causada pelo Citrus leprosis virus (CiLV, é uma das principais doenças presentes em pomares cítricos fluminenses. O objetivo deste trabalho foi comparar o quadro sintomatológico desenvolvido por isolados de CiLV obtidos de cultivares comerciais de laranjeira (Lima, Pêra e Seleta, inoculados mecanicamente em Chenopodium amaranticolor, em três diluições. Após cinco a sete dias da inoculação foram observadas lesões necróticas, com pequeno halo clorótico quando observadas contra a luz. O maior número de lesões, nas três diluições, foi obtido do isolado de 'Seleta', seguido por 'Pêra' e 'Lima'. A melhor diluição utilizada para a observação das lesões foi de 1:10. Os resultados demonstram uma possível variabilidade biológica entre os isolados virais e/ou uma menor ou maior replicação viral, dependendo da cultivar, indicando um possível mecanismo de resistência da planta ao vírus.Citrus leprosis, caused by Citrus leprosis virus (CiLV is one of the major diseases in citrus orchards in the State of Rio de Janeiro. The objective of this study was to compare the development of symptoms on Chenopodium amaranticolor inoculated with CiLV isolates from 'Lima', 'Pera' and 'Seleta' sweet oranges using three different dilutions. Five to seven-days after inoculation, necrotic lesions exhibiting a small chlorotic halo when exposed to the light, were observed. The highest number of lesions developed using the three dilutions was obtained from 'Seleta', an intermediate value from 'Pêra' and the lowest number from 'Lima'. The best dilution for lesions development was 1:10. The results demonstrate a possible biological variability among the virus isolates and/or a lower or higher viral replication, dependent on the cultivar. This indicates a putative mechanism of Citrus resistance to the virus.

  13. Ci vediamo mercoledì. Gli altri giorni ci immaginiamo. La nuova immagine femminile nelle ricerche di alcune artiste e fotografe italiane negli anni Settanta del Novecento.

    Directory of Open Access Journals (Sweden)

    Cristina Casero

    2015-12-01

    Full Text Available A partire dai primi anni degli anni Settanta, si diffonde la consapevolezza che l’immagine femminile proposta dai mezzi di comunicazione visivi deriva da un dominio visuale patriarcale e sciovinista. Questa consapevolezza è in linea con molte proposte teoriche sull’immagine fotografica, secondo cui non possiamo più percepire in termini di documentazione della realtà, bensì di istituzioni sociali, secondo Roland Barthes. All’interno di questo contesto culturale, le teorie femministe, che in questi anni si stanno diffondendo anche Italia, emergono all’interno dei percorsi di ricerca di alcune artiste e fotografe, le quali, attraverso le proprie immagini, propongono una nuova immagine della donna che si offre, al di là delle convenzioni, come il frutto di un sguardo sincero e genuino sulla propria femminilità. La fotografia è il mezzo più appropriato per lavorare sull’identità, permettendo alle donne di guardarsi come in uno specchio e di restituire la realtà dal proprio punto di vista, che è alternativo, antagonista, anche se spesso solamente “vero”. Riflettere sull’opera Ci vediamo mercoledì. Gli altri giorni ci immaginiamo per è una buon punto di partenza per analizzare queste dinamiche.

  14. Aulas de ciências para surdos: estudos sobre a produção do discurso de intérpretes de LIBRAS e professores de ciências

    Directory of Open Access Journals (Sweden)

    Walquíria Dutra de Oliveira

    2015-06-01

    Full Text Available O bilinguismo na educação de surdos pressupõe a língua de sinais como primeira língua do surdo e, com a inclusão escolar, os alunos surdos foram inseridos em instituições regulares de ensino, implicando uma nova estrutura da sala de aula. O ensino de ciências para surdos é um desafio, pois o aluno surdo utiliza uma língua diferente da do professor, e necessita de um intérprete de LIBRAS para ter acesso ao corpo de conhecimentos mediados por ele. A investigação objetivou analisar a produção de narrativas (um gênero do discurso de professores e intérpretes de LIBRAS sobre a aula de ciências para surdos. As narrativas foram produzidas no “diário de aula”, e foram analisadas pela técnica de análise de conteúdo. Nossos resultados apontam que o bilinguismo ainda não permeia a sala de aula inclusiva, e que a barreira linguística é a maior dificuldade encontrada no aprendizado dos conhecimentos científicos pelos alunos surdos.

  15. Biografia nieobecna. Wokół życia i twórczości Ireneusza Plater-Zyberka

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    Robert Zawisza

    2014-12-01

    Full Text Available An Absent Biography. About the life and work of Ireneusz Plater-Zyberk Ireneusz Plater-Zyberk (1896–1946, was a writer and a film producer, adventurer and gallant. His life is an incredible story of the disabled individual who succeeded in an amazing career. Plater-Zyberk was born in a wealthy landowning family who lived at the estate of Vabole in Latvia. He was born without hands and at that time, due to his disability, was classified as "margins of society." Thanks to perseverance and commitment of his mother, he graduated as an extern student from high school in Warsaw, Poland. His career  includes Life without Hands, memories,  and two novels. He was a co-author of first movie in Poland with stunt effects Dead Node (1927, which unfortunately wasn’t preserved. Also, he was recognized as a documentary creator as well as an initiator of film production regulations.   Biografia nieobecna. Wokół życia i twórczości Ireneusza Plater-Zyberka Ireneusz Plater-Zyberk (1896 lub 1897–1946 był literatem i twórcą filmowym, nieco awanturnikiem i bawidamkiem. Jego postać to niezwykły przykład niepełnosprawnego, który osiągnął w dwudziestoleciu międzywojennym znaczącą karierę. Ireneusz Plater-Zyberk pochodził z zamożnej rodziny ziemiańskiej, zamieszkałej w majątku Wabol na Łotwie. Urodził się bez rąk i w ówczesnej rzeczywistości miał pozostać na marginesie społeczeństwa. Dzięki wytrwałości matki udało mu się ukończyć jako ekstern gimnazjum w Warszawie. W swoim dorobku ma wspomnienia Życie bez rąk oraz dwie powieści. Ważną rolę odegrał Plater jako scenarzysta i reżyser, był m.in. współtwórcą pierwszego polskiego filmu z efektami kaskaderskimi „Martwy węzeł” (1927. Miał on również ogromne zasługi jako twórca filmów dokumentalnych i jednocześnie inspirator zmian w prawodawstwie dotyczącym produkcji filmowej. Tłem jego twórczości pisarskiej jest burzliwe i pełne przygód

  16. Museus, ciência e educação: novos desafios Museums, science, and education: new challenges

    Directory of Open Access Journals (Sweden)

    Maria Esther Valente

    2005-01-01

    Full Text Available Este artigo discute a conformação do papel social dos museus de ciência pelo fazer científico e tecnológico, pelas demandas da sociedade e pelas questões educacionais, sobretudo na negociação com seus públicos. Analisam-se a trajetória de consolidação dos museus de ciência no Brasil e as modificações dessas instituições impostas pela sociedade atual. Discute-se como a comunicação tornou-se o centro da discussão sobre cultura museal, especialmente por redimensionar o aspecto educacional segundo a concepção de práticas sociais, consideradas recursos fundamentais. Examina-se, também, a incorporação das idéias de 'risco' e 'incerteza' produzidas pela ciência a essa nova forma de pensar os museus, na qual público e processos comunicacionais são valorizados.The article discusses how the social role of science museums is shaped by scientific and technological endeavor, society's demands, and educational issues, above all in negotiations with a museum's audiences. The text also analyzes the trajectory taken by Brazil's science museums in their process of consolidation and the changes current society has imposed on these institutes. Communication has become the center of the discussion on museum culture, particularly in that it adjusts the educational aspect according to the conception of social practices, which are deemed fundamental resources. Lastly, the article examines the incorporation of the ideas of 'risk' and 'uncertainty', produced by science, into this new way of thinking about museums, which values the public and communication processes.

  17. Naphtha vs. dieseline – The effect of fuel properties on combustion homogeneity in transition from CI combustion towards HCCI

    KAUST Repository

    Vallinayagam, R.

    2018-03-20

    The scope of this research study pertains to compare the combustion and emission behavior between naphtha and dieseline at different combustion modes. In this study, US dieseline (50% US diesel + 50% RON 91 gasoline) and EU dieseline (45% EU diesel + 55% RON 97 gasoline) with derived cetane number (DCN) of 36 are selected for experimentation in an optical engine. Besides naphtha and dieseline, PRF60 is also tested as a surrogate fuel for naphtha. For the reported fuel with same RON = 60, the effect of physical properties on combustion homogeneity when moving from homogenized charge compression ignition (HCCI) to compression ignition (CI) combustion is studied.The combustion phasing of naphtha at an intake air temperature of 95 °C is taken as the baseline data. The engine experimental results show that higher and lower intake air temperature is required for dieseline mixtures to have same combustion phasing as that of naphtha at HCCI and CI conditions due to the difference in the physical properties. Especially at HCCI mode, due to wider distillation range of dieseline, the evaporation of the fuel is affected so that the gas phase mixture becomes too lean to auto-ignite. However, at partially premixed combustion (PPC) conditions, all test fuels required almost same intake air temperature to match up with the combustion phasing of baseline naphtha. From the rate of heat release and combustion images, it was found that naphtha and PRF60 showed improved premixed combustion when compared dieseline mixtures. The stratification analysis shows that combustion is more stratified for dieseline whereas it is premixed for naphtha and PRF60. The level of stratification linked with soot emission showed that soot concentration is higher at stratified CI combustion whereas near zero soot emissions were noted at PPC mode.

  18. In-cylinder visualization and engine out emissions from CI to PPC for fuels with different properties

    KAUST Repository

    An, Yanzhao

    2018-02-27

    This study investigated the transition from conventional Compression Ignition (CI) to Partially Premixed Combustion (PPC) in an optical engine for fuels with differing properties. Combustion stratification and emissions were measured with diesel, naphtha and their corresponding surrogate fuels, N-heptane and PRF50. The aim of the study is to link the combustion images with engine out emissions and mixture homogeneity. Single injection strategy with the change of start of injection (SOI) from late to early injections was employed. Results show that combustion phasing trend is similar for diesel/N-heptane as well as for naphtha/PRF50 as the SOI moved from late injection timing to early injection timing. However, there is a significant difference in combustion phasing behavior for gasoline like fuels (naphtha and PRF50) and diesel fuels (diesel and N-heptane). CO emissions show an inverted V-shaped trend with one single peak in the transition zone. A “W” shape trend, with two bottoms at various dilution rates is observed for the UHC emissions. NOX emissions are high in the transition zone and decreased to lower levels in CI and PPC zones. NOX emissions are significantly reduced by reducing the intake O2 concentration with nitrogen. Except for diesel, the other three fuels show lower soot emissions. When compared to diesel like fuels, the natural luminosity of the images are lower for gasoline like fuels, indicating better premixed combustion. As the SOI is changed from CI to PPC mode, the combustion stratification increases towards a peak value in the transition zone and then decreases to a low level in PPC zone. A competition exists between the intake temperature and the dilution rate for the combustion stratification. The level of stratification is higher for real fuels (diesel and naphtha) when compared to surrogate fuel (N-heptane and PRF50).

  19. As ilhas de racionalidade e o saber significativo: o ensino de ciências através de projetos

    Directory of Open Access Journals (Sweden)

    Cátia Maria Nehring

    Full Text Available Resumo: O objetivo deste artigo é refletir sobre o ensino atual de ciências, sua relação com o cotidiano e o universo de interesse dos estudantes. A falta de relação deste ensino com a realidade vivenciada pelos alunos faz com que tenham um menor engajamento neste processo de aprendizagem, para o qual não vêem muito significado. Uma das razões deste problema está na seleção dos conteúdos disciplinares e na forma como são trabalhados nas aulas de ciências e a questão que se coloca é: como devemos proceder para que os alunos possam compreender o conhecimento científico como resposta a uma questão ou a um problema? Uma das possibilidades para o alcance deste objetivo é o desenvolvimento de atividades de modelização que, além de manter contato com os modelos científicos, permite a sua aplicação à realidade de forma significativa. Para intensificar essa aproximação entre o ensino de ciências e o cotidiano, Gerard Fourez (1994 propõe a construção de ilhas interdisciplinares de racionalidade, na perspectiva de uma alfabetização científica e técnica. Para ele este é um meio de promover um ensino capaz de propiciar a autonomia, o domínio e a comunicação das tecnologias intelectuais elaboradas pela humanidade. Neste sentido, ao mesmo tempo que apresentamos as etapas de construção de uma ilha interdisciplinar de racionalidade, propomos um exemplo da mesma em torno do tema: "um banho saudável".

  20. A ciência como sublimação: o desafio da objetividade na sociologia reflexiva de Pierre Bourdieu

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    Gabriel Peters

    Full Text Available Resumo O artigo investiga a resposta de Bourdieu a um problema clássico na epistemologia das ciências sociais: como é possível um conhecimento objetivo do mundo societário se os pontos de vista dos cientistas sociais são condicionados por seu pertencimento a esse mundo? O texto expõe sua tese de que a sociologia da sociologia, ao revelar os condicionantes sociais do pensamento sobre o social, possibilita uma margem de liberdade em relação a tais condicionantes. Longe de desembocar no relativismo pluriperspectivista, portanto, a sociologia reflexiva de Bourdieu é voltada à conquista da objetividade. O trabalho também mostra que sua noção de reflexividade se articula a uma concepção de objetividade científica como efeito “sublimado” da competição regrada entre agentes interessados que caracteriza o campo da ciência. Por fim, embora simpático à proposta de Bourdieu, o artigo é pontuado com considerações críticas sobre as tensões a ela inerentes: a o reconhecimento do caráter “posicionado” das suas intervenções sociológicas versus a intenção de capturar o espaço inteiro dos pontos de vista sociocientíficos; b a defesa de uma reflexividade sociológica calcada na dialética racional do campo científico versus a admissão de que as ciências sociais não possuem suficiente autonomia para levar essa dialética racional a cabo.

  1. Bioética clínica: ciência e humanidade = Clinical bioethics: science and humanity

    Directory of Open Access Journals (Sweden)

    Batista, Cristiano Corrêa

    2005-01-01

    Full Text Available Objetivo: A medicina pré-moderna tinha por enfoque a harmonia entre o universo e a natureza e tudo era aparentemente possível para os médicos aptos a interpretarem sinais e sintomas. A partir da invenção do estetoscópio inicia-se o processo de investigação do interior dos corpos vivos. Ao longo do tempo, a medicina foi sendo impregnada com a tecnologia e, nos dias atuais, a chamada tecnociência se faz onipresente deixando em segundo plano, ou até mesmo ausente, a interação médico-paciente. Urge a criação de uma nova indústria intelectual com a capacidade de criticar essa nova forma de praticar a medicina embasada principalmente na tecnologia. O objetivo do presente artigo é fazer uma reflexão, por meio da bioética clínica, dessa nova forma de praticar a medicina na tentativa de resgatar o lado humano da ciência médica. Método: Foi realizada uma consulta na base de dados da Medline e LILACS nos últimos dez anos e uma revisão da literatura nacional em torno do tema medicina, bioética, ciência e humanidade. Resultados e conclusão: Nossa conclusão é de a medicina não ser apenas uma ciência, mas também uma arte. Ela exige, em situações particulares, elaborar julgamentos de valor. A Bioética Clínica, surge para guiar caminhos combinando o conhecimento técnico-científico das ciências biomédicas com o conhecimento filosófico. Por meio da Bioética Clínica é possí- vel resgatar os aspectos humanos da arte da medicina

  2. Ciência acrítica : o aquecimento global nos livros didáticos de Biologia

    OpenAIRE

    Delaqua, Fábio Alexei

    2013-01-01

    O aquecimento global tem sido amplamente divulgado pela mídia como um fato cientificamente comprovado, mascarando as divergências existentes entre os cientistas sobre tal fenômeno. Em contrapartida, a abordagem de temas controversos em sala de aula é fundamental para a construção pelos alunos de uma visão mais realista da ciência. Nesta direção, o objetivo do presente trabalho é analisar criticamente a abordagem do aquecimento global nos livros didáticos de Biologia, procurando identificar as...

  3. MOSTRA ANUAL DE FÍSICA DO RN: Ciência acessível a todos

    Directory of Open Access Journals (Sweden)

    Jacques Cousteau da Silva Borges

    2008-05-01

    Full Text Available No ano de 2003, os professores de Física do CEFET-RN, tiverem a idéia de expor aos seus alunos os equipamentos e experimentos de Física presentes em seus laboratórios. O evento de apenas dois dias foi intitulado “I Mostra de Física do Rio Grande do Norte”, e teve como seu principal público os próprios alunos do CEFET-RN. Nestes dois dias, praticamente todos os servidores e alunos da instituição se deparam com experiências de mecânica, óptica, eletricidade e tantas outras, que despertaram o interesse de muitos alunos, pela ciência e tecnologia. Nos anos seguintes, a mostra cresceu e evoluiu, contanto não apenas com demonstrações de Leis Físicas por experimentos didáticos, mas também com mini-cursos, oficinas, palestras, lançamentos de livros e apresentações de filmes relacionados com a Física e com a ciência como um todo. A partir de uma abordagem lúdica e interativa, alunos e professores do CEFET e de outras instituições vêm participando ano a ano, cada vez mais. O presente trabalho irá tratar de como essa mostra evoluiu nessas quatro edições, além destacar como ela têm incentivado a inclusão de jovens no mundo científico. Por fim, avalia-se a contribuição da Mostra de Física para o curso de Licenciatura em Física do CEFET-RN, analisando a participação e envolvimento dos graduandos nas atividades desenvolvidas nessa “Feira de ciências”. Palavras-chave: Ensino de Física. Mostra de Física. Feira de Ciências.

  4. Skinner e Feyerabend sobre o Método e o Papel da Ciência em uma Sociedade Livre

    OpenAIRE

    Rocha, César Antonio Alves da

    2017-01-01

    Resumo Da obra de B. F. Skinner fazem parte preocupações de ordem epistemológica, encerrando discussões sobre metodologia e critérios de verdade, e outras de ordem política e social, concernentes à relação entre ciência e sociedade. De um discurso, em alguns aspectos, coincidentes com uma forma de positivismo, Skinner passou a crítico de tendências puramente formalistas sobre o método científico, e de uma defesa do gerenciamento da sociedade por especialistas, passou a uma crítica à centraliz...

  5. O corpo e a construção das desigualdades de gênero pela ciência

    OpenAIRE

    Fernandes,Maria das Graças Melo

    2009-01-01

    Este trabalho analisa, a partir de uma revisão bibliográfica assistemática, como a distinção entre o corpo masculino e o feminino produzida pela ciência desde o século XIX, especialmente pelo discurso e prática médica, enunciadores legítimos dos desígnios naturais dos corpos, vem contribuir para a construção de uma inferioridade do corpo feminino que legitima desigualdades de gênero vigentes nas sociedades tradicionais que, de algum modo, ainda se reproduzem ou permanecem na contemporaneidade...

  6. Os 4Ps do composto de marketing na literatura de Ciência da Informação

    Directory of Open Access Journals (Sweden)

    Sueli Angelica Do Amaral

    Full Text Available Analisa 60 documentos sobre os 4Ps do composto de marketing em unidades de informação da literatura de Ciência dei Informação no período de 1975 a 1995, para conhecer quantos e quais autores escreveram sobre o tema, qual o pioneiro, quem foi o pioneiro a propor adição de Ps. Apresenta a cronologia dos documentos estudados e discute as 4Ps do composto de marketing. Propõe a adoção da mais completa proposta analisada como forma de garantir o futuro das unidades de informação.

  7. Proactive Approach for Safe Use of Antimicrobial Coatings in Healthcare Settings: Opinion of the COST Action Network AMiCI

    Directory of Open Access Journals (Sweden)

    Merja Ahonen

    2017-03-01

    Full Text Available Infections and infectious diseases are considered a major challenge to human health in healthcare units worldwide. This opinion paper was initiated by EU COST Action network AMiCI (AntiMicrobial Coating Innovations and focuses on scientific information essential for weighing the risks and benefits of antimicrobial surfaces in healthcare settings. Particular attention is drawn on nanomaterial-based antimicrobial surfaces in frequently-touched areas in healthcare settings and the potential of these nano-enabled coatings to induce (ecotoxicological hazard and antimicrobial resistance. Possibilities to minimize those risks e.g., at the level of safe-by-design are demonstrated.

  8. Effect of glycerol ethoxylate as an ignition improver on injection and combustion characteristics of hydrous ethanol under CI engine condition

    International Nuclear Information System (INIS)

    Munsin, R.; Laoonual, Y.; Jugjai, S.; Matsuki, M.; Kosaka, H.

    2015-01-01

    Highlights: • Glycerol ethoxylate (GE) shows the similar results as the commercial additive. • GE decreases injection rate, but increases injection delay and duration of ethanol. • GE shortens ignition delay and decreases heat released in premixed burn of ethanol. • GE has a minor effect on flame temperature of ethanol. • KL factor and soot of ethanol are sensitive to both GE and the commercial additive. - Abstract: This paper investigates the effects of glycerol ethoxylate as an ignition improver on injection and combustion characteristics of hydrous ethanol under a CI engine condition. Injection characteristics were investigated by an in-house injection rate measurement device based on the Zeuch method, while spray combustion has been performed in the rapid compression and expansion machine (RCEM). The CI engine condition indicated as density, pressure and temperature of compressed synthetic gas, consisting of 80% argon and 20% oxygen, at fuel injection timing in RCEM of 21 kg/m 3 , 4.4 MPa and 900 K, respectively. This condition is equivalent to the isentropic compression of air of the actual CI engine with compression ratio of 22. Hydrous ethanol without ignition improver (Eh95) and the ethanol dedicated for heavy duty vehicles (ED95: composed of hydrous ethanol with the commercial additive for ED95) are reference fuels representing low and high quality ethanol fuel for CI engines, respectively. All test fuels are injected at constant heat input. The results indicate that the additional ignition improvers change injection characteristics, i.e. injection delay, injection rate and discharge coefficient of hydrous ethanol. The maximum injection rates at fully opened needle for the ethanol dedicated for heavy duty vehicles (ED95) and hydrous ethanol with 5% glycerol ethoxylate (5%GE) are lower than that of hydrous ethanol without ignition improver (Eh95) by approximately 10%. Additional injection duration is required for ED95 and 5%GE to maintain a

  9. Ciência & Saúde coletiva Journal at the national and international context of scientific communication.

    Science.gov (United States)

    Minayo, Maria Cecília de Souza; Gomes, Romeu

    2015-07-01

    The article discusses the role of the Ciência & Saúde Coletiva Journal in the dissemination of knowledge in Brazil and in the international scientific community, its new challenges and role in the consolidation of the national public health field. Its history is outlined, positioning it as a scientific journal and the themes approached in it are analyzed. Among the findings, it is emphasized that the journal features a structured space by the habitus of public health, and creates its own habitus that contributes to structure this field. In addition, the journal contributes to the development of critical mass in the area and is committed to the Brazilian Public Health System.

  10. Współcześni diaryści - Stefan Kisielewski, Andrzej Kijowski, Krzysztof Mętrak

    OpenAIRE

    Krupska, Katarzyna

    2006-01-01

    Ľarticle présente en bref ľhistoire et la théorie de la forme du journal. Dans ce texte on analyse: Dziennik de S. Kisielewski, Dziennik de A. Kijowski et Dziennik de K. Mętrak. Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

  11. Natureza em Pauta: reflexões sobre a divulgação ambiental na ciência hoje

    Directory of Open Access Journals (Sweden)

    BRANDÃO, Alessandra Gomes

    2009-06-01

    Full Text Available This article is a result of a research that examined material on environment published in the magazine Ciência Hoje, with the objective of investigating how the ambient questions presents for the Brazilian society, by a periodic. The analysis of the divulgation of the contents about the environment was carried through, identificating as the terms Environment and Nature appear in the texts; if both the chains of thoughts in defense of the nature (biocentric and anthropocentric appear in publications, and still as the concept of sustainable development is presented by the authors of publications.

  12. Os papéis de gênero nos livros didáticos de ciências

    OpenAIRE

    Eliecília de Fátima Martins; Zara Hoffmann; UFGO

    2009-01-01

    Resumo: Este trabalho realiza uma leitura sobre as identidades de gênero nos livros didáticos de Ciências, da primeira fase do ensino fundamental, discutindo as invenções identitárias apresentadas. Analisa a divisão do mundo do homem e do mundo da mulher, buscando demonstrar como os discursos dessas obras reafirmam a matriz bipolar "masculino" e "feminino" nas relações de gênero. Descreve e problematiza o funcionamento das mensagens subliminares que procuram produzir identidades distintas ent...

  13. Ensino de notas explicativas nos Cursos de Ciências Contábeis de universidades públicas brasileiras

    OpenAIRE

    Campos, Couto; Lemes, Sirlei

    2013-01-01

    A evidenciação contábil é um dos principais mecanismos utilizados por stakeholders para obterem informações referentes a uma empresa e, com elas, embasarem suas decisões. Entretanto, pesquisas sobre evidenciação contábil têm mostrado a dificuldade das empresas e, por conseguinte, dos profissionais contábeis em elaborar notas explicativas claras e objetivas.  Assim, o objetivo do presente estudo é analisar como os Cursos de Ciências Contábeis das universidades públicas brasileiras preparam seu...

  14. Temas controversos em ciência, tecnologia e sociedade: formação e competência docente

    OpenAIRE

    Vestena, Rosemar de Fátima; Boer, Noemi; Scherer, Nádia Maria Bohrer

    2016-01-01

    Apresentam-se, neste artigo, os resultados de uma pesquisa realizada com professores daeducação básica do município de Nova Palma, Rio Grande do Sul, Brasil. Objetiva-se apurarque temas controversos (TC) são relativos à Ciência, Tecnologia e Sociedade (CTS) com os quaisos professores manifestam maior competência em trabalhar em sala de aula. A pesquisa, deabordagem qualitativa, compreendeu 89 professores da educação básica, com formação, tempoe percursos profissionais variados. A coleta de da...

  15. Rola androgenów w patogenezie i przebiegu klinicznym stwardnienia rozsianego. Nowe możliwości terapii

    Directory of Open Access Journals (Sweden)

    Małgorzata Turniak

    2015-04-01

    Full Text Available Stwardnienie rozsiane to choroba autoimmunologiczna, która atakuje ośrodkowy układ nerwowy. Reakcja autoimmunologiczna skierowana przeciwko komponentom mieliny prowadzi do degradacji osłonki otaczającej aksony komórek nerwowych, co upośledza ich zdolność do przewodzenia impulsów – zarówno z mózgu, jak i do niego. Mimo intensywnych badań etiologia i patogeneza choroby nadal nie są dokładnie poznane. Zostało ustalone, że w rozwoju stwardnienia rozsianego biorą udział czynniki genetyczne i środowiskowe. Średni stosunek częstości występowania choroby u kobiet do częstości jej występowania u mężczyzn w przypadku typowego wieku zachorowania (między 35. a 49. rokiem życia wynosi około 2,0, czyli kobiety zapadają na stwardnienie rozsiane dwukrotnie częściej. Także przebieg choroby i rokowanie są różne u kobiet i mężczyzn. Zależności tej nie obserwuje się wśród pacjentów pediatrycznych, co może sugerować, że hormony płciowe odgrywają istotną rolę w podatności na schorzenie i jego przebiegu. Liczne badania dowiodły istnienia wpływu androgenów na komórki nerwowe i glej in vitro. Co więcej, pozytywny wpływ zarówno testosteronu, jak i dihydrotestosteronu został udowodniony w modelach zwierzęcych stwardnienia rozsianego. Pilotażowe badania dotyczące zastosowania testosteronu i selektywnych modulatorów receptora androgenowego wykazały obiecującą tolerancję i brak poważnych efektów ubocznych, co daje nadzieję na wykorzystanie tej terapii. Krótko- i długoterminowa efektywność jej działania oraz skutki uboczne wymagają jednak dalszych badań.

  16. Atividades investigativas, como estratégia para o ensino-aprendizagem em ciências: propostas e aprendizagens

    OpenAIRE

    SOUZA, Simony Suely Paes de

    2007-01-01

    Partindo da premissa que O ensinar requer saber aprender e saber construir (juntamente com os nossos alunos) as aprendizagens que buscamos, desenvolvi uma proposta de atividades investigativas, para o ensino-aprendizagem em Ciências. Ressalto que ministrar aulas diferenciadas, nem sempre seria ou é fácil, pois há um conteúdo a ser cumprido e terminado, além de um tempo muito curto para realizá-las. Assim, minha dissertação é uma investigação do tipo qualitativa, que se configura como uma pesq...

  17. CI-Miner: A Semantic Methodology to Integrate Scientists, Data and Documents through the Use of Cyber-Infrastructure

    Science.gov (United States)

    Pinheiro da Silva, P.; CyberShARE Center of Excellence

    2011-12-01

    Scientists today face the challenge of rethinking the manner in which they document and make available their processes and data in an international cyber-infrastructure of shared resources. Some relevant examples of new scientific practices in the realm of computational and data extraction sciences include: large scale data discovery; data integration; data sharing across distinct scientific domains, systematic management of trust and uncertainty; and comprehensive support for explaining processes and results. This talk introduces CI-Miner - an innovative hands-on, open-source, community-driven methodology to integrate these new scientific practices. It has been developed in collaboration with scientists, with the purpose of capturing, storing and retrieving knowledge about scientific processes and their products, thereby further supporting a new generation of science techniques based on data exploration. CI-Miner uses semantic annotations in the form of W3C Ontology Web Language-based ontologies and Proof Markup Language (PML)-based provenance to represent knowledge. This methodology specializes in general-purpose ontologies, projected into workflow-driven ontologies(WDOs) and into semantic abstract workflows (SAWs). Provenance in PML is CI-Miner's integrative component, which allows scientists to retrieve and reason with the knowledge represented in these new semantic documents. It serves additionally as a platform to share such collected knowledge with the scientific community participating in the international cyber-infrastructure. The integrated semantic documents that are tailored for the use of human epistemic agents may also be utilized by machine epistemic agents, since the documents are based on W3C Resource Description Framework (RDF) notation. This talk is grounded upon interdisciplinary lessons learned through the use of CI-Miner in support of government-funded national and international cyber-infrastructure initiatives in the areas of geo

  18. Capítulo 1. A ciência do povo e as origens do estado cultural

    OpenAIRE

    Ramos, Rui

    2018-01-01

    Bilhete postal publicitárioFonte: António Medeiros (colecção pessoal) O objectivo deste ensaio é estudar o desenvolvimento das pesquisas sobre a chamada cultura tradicional, no contexto da construção dos estados democráticos modernos na Europa. Interessa-nos compreender em que medida a democracia foi identificada com a gestão da cultura de massas e a cultura democrática com o chamado folclore. Folclore e democracia Em 1900, a Enciclopédia Portuguesa Ilustrada traduzia folclore como a “ciência...

  19. Przebieg ciąży i porodu u pacjentki z ostrą białaczką szpikową. Opis przypadku

    Directory of Open Access Journals (Sweden)

    Michał Krekora

    2011-12-01

    Full Text Available Szacuje się, że ok. 1/1000 ciąż jest powikłana występowaniem nowotworu złośliwego, z czego największyodsetek dotyczy zachorowalności na raka szyjki macicy. Rozpoznanie białaczki przypada na ok. 1/100 000 ciężarnychi do dziś nie ma wystarczających doniesień na temat postępowania leczniczego w trakcie ciąży, jak i odległegowpływu ewentualnych terapii na dzieci urodzone z ciąż objętych leczeniem jeszcze za życia płodowego.Leczenie białaczek podczas ciąży jest o wiele trudniejsze z uwagi na fakt konieczności doboru terapii do każdejciąży z osobna, uwzględniając zaawansowanie ciąży oraz stan zdrowia zarówno matki, jak i dziecka. Mimokontrowersji, jakie wzbudza zastosowanie chemioterapii u kobiet ciężarnych, to dziś takie postępowanie wydajesię najlepszym sposobem leczenia, a negatywne skutki terapii zmniejszają się wraz z wiekiem ciąży.

  20. Determining the Optimum Cut-Off Grades in Sulfide Copper Deposits / Określanie Optymalnej Wartości Odcięcia Zawartości Procentowej Pierwiastka Użytecznego W Złożach Siarczku Miedzi

    Science.gov (United States)

    Rahimi, Esmaeil; Oraee, Kazem; Shafahi, Zia Aldin; Ghasemzadeh, Hasan

    2015-03-01

    Optimum cut-off grades determination in mining life affects production planning and ultimate pit limit and it is also important from social, economical and environmental aspects. Calculation of optimum cut-off grades has been less considered for mines containing various mineral processing methods. In this paper, an optimization technique is applied to obtain optimum cut-off grades for both concentration and heap leaching processes. In this technique, production costs and different recoveries of heap leaching method directed into modeling different annual cash flows in copper mines. Considering the governing constraints, the Lagrange multiplier method is practiced to optimize the cut-off grades in which the objective function is supposed to maximize Net Present Value. The results indicate the effect of heap leaching process on the optimum cut-off grades of primary and secondary sulfide deposits. Określanie optymalnego poziomu odcięcia dla zawartości procentowej pierwiastka użytecznego ma poważny wpływ na planowanie produkcji, określanie ostatecznych limitów zasobów złoża; jest to także ważna kwestia z punktu widzenia kwestii społecznych, ekonomicznych i środowiskowych. Obliczanie optymalnego poziomu odcięcia dla zawartości procentowej pierwiastka użytecznego nie było zwykle szeroko rozważane w przypadku kopalni prowadzących ciągły system przeróbki. W pracy tej przedstawiono technikę optymalizacji określania poziomu zawartości procentowej pierwiastka użytecznego z uwzględnieniem zarówno procesów koncentracji jak i ługowania. W metodzie uwzględniono koszty produkcji i różne wskaźniki odzysku rudy, wielkości te wykorzystane zostały do modelowania rocznych przepływów gotówki w kopalniach miedzi. Uwzględniając narzucone ograniczenia, zastosowano metodę mnożników Lagrange'a w celu optymalizacji określania poziomu zawartości procentowej pierwiastka użytecznego, gdzie przyjętą funkcją celu jest maksymalizacja wartości bie